Carriage bolt head markings Carriage bolts have smooth, domed heads with a square section underneath that pulls into the Bolt head markings have a specific purpose that will help you understand the fastener more in-depth. 25-4 inches in size. In the case of very long screws, they may be supplied with thread length of only 6 inches. Note: Some bolts share identical head identification and have Mudge Fasteners wants to help you decipher these head markings and when you'll need to know them. ble to withstand without permanent deformation. 8 10. Bolt head markings are a combination of letters, numbers, or both, which help identify the fastener. Yield Strength - The amount of tensile stress at which . Can be used with a nut, or in a tapped hole. I had the bolts quoted with a bunch of warlords parts and it added way too much to the cost . (psi) 1/4”-1” R C 25-34 85,000 92,000 120,000 : Grade 8 ASTM-A354 SAE J429: Size Hardness Rockwell Proof Load Head markings on bolts and screws provide crucial information about material, strength, and manufacturer, helping you select the right fastener for your project’s demands and safety. Bolts meeting SAE J429 standards have radial lines engraved on the bolt head. Stainless steel carriage bolts usually have a shear strength of around 90,000psi. 094" Head Height, Overall (Minimum): 0. Head Style Detail: Square Neck; Head Markings: Material Grade Mark "8. Here are some common markings you may find on these fasteners: Strength Markings. In stock and ready to ship. Unlike the previously mentioned fasteners, imperial socket screws, which include both unified and BS, quite often do not have head markings at all, the occasional exception may be a manufacturers identification Download our bolt head markings chart to reference any time you need to figure out the grade of a bolt you're using or looking for. Portland Bolt produces bent bolts with cut threads from 1/2" diameter through 4-1/2" diameter and reduced body rolled thread bent bolts from 1/2" diameter through 1" diameter. 4. 102" PRODUCT ATTRIBUTES. View fullsize. Supplies and solutions for every industry step bolts have a wider, lower-profile, round head. The head is usually shallow and dome-shaped. ; These bolts are marked with three radial lines. These bolts are perfect for your needs. ASTM A307 Grade A: Suitable for bolts, studs and screws for general applications, with a minimum tensile strength of 60 ksi. A307 Grade A Plain ; A307 Grade A Clear Zinc; A307 Grade A Hot Dipped Galvanized; Nuts. Available in Grade 8 (150,000-170,000 PSI) We are the Industry Experts. Grade 5. Carriage Bolts, called Coach Bolts in the U. The inch series also includes the ASTM standard, which includes: A307 Grade A and Grade B ; A193 Grade B7 ; A354 Grade BC and Grade BD ; Metric Bolt Head Markings These stainless steel carriage bolts have a square neck to help keep the bolt in place during installation. The portion immediately below the mushroom head, however, is 316 stainless steel bolt head markings. Hardware Menu. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Six radial lines 60 degrees apart The grades are typically indicated by markings engraved on top of the bolt head, which may show up as raised numbers or dashes. 6678 www. Bolt Head Markings And Grades; Machine, Sheet Metal, and Thread Cutting/Thread Forming/Thread Rolling Screws Technical Information; Tap Bolts Carriage Bolts Elevator Bolts Hanger Bolts Eye Bolts Flange Bolts Hex Bolts & Cap Screws Lag Bolts Plow Bolts Square Head Bolts Step Bolts Structural Bolts. 239" PRODUCT ATTRIBUTES. A carriage bolt is a distinctive bolt which comes with a mushroom head and a circular shank cross-section. Structural Bolts : Hex Cap Screws. 313" Head Height, Overall (Maximum): 0. 1-800-479-0056. Toggle menu. These are the most common grades, but there are others. In addition, we give the material the bolt is made from as well as its hardness range. Hex Flange / Frame Bolts : Carriage bolts are a type of fastener that consists of a cylindrical head with a flat and smooth bearing surface, a short square neck, and a threaded shank that extends through a pre-drilled hole. Download our bolt head markings chart to reference any time you need to Screw and bolt head markings identify the manufacturer of the fastener and the standard to which the fastener was made. A quick aside – You may notice that in the images the WG mark has been moved around a bit to accommodate the grade markings. Patent Office per A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. Projects. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Main Page: Hex Head Cap Screws, Hex Tap Bolts, Heavy Hex Head Screws, Square Head Bolts, Carriage & Shaker Screen Bolts, Elevator Bolts, Step Bolts, T-Slot Bolts, Flanged Bolts, Counter bore Bolts, L-Anchor Bolts, Scraper Blade Blots, Head Plow Bolts, Bolt Gauges, Common Head Markings, Tightening Torque Guide, Proof Load Tensile Carriage Bolts are heavy profile hexagon head bolts with full or partial thread configurations. 9 Hex bolts, or hex cap screws, are used in machinery and construction. This design prevents the bolt from turning when you tighten the nut, making them ideal for applications where you need a strong, vibration-resistant connection. This chart helps to identify the grades of bolts using the identification marks on the Socket heads are used in the manufacture of stationary equipment that is typically bolted or anchored to the ground (stamping presses, plastic injection molding machines, assembly line Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. Carriage bolts, characterized by a smooth, dome-shaped head and a square shoulder under the head, are ideal for applications where a smooth finish and security are desired. Bolts from 1/2″ diameter through 2-1/2″ diameter in most ASTM, AASHTO, and SAE specifications. Very small fasteners may be exempt from marking requirements, and imperial socket screws often do not have head markings. Skip to main A carriage bolt has a few distinct features that separate it from the other types of bolts including the hex bolt. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Material Grade Mark "A307" Thread Most grade 8 bolts require a permanent marking symbol that is designated by 6 radial lines. M10-1. Skip to main content. Fasteners commonly have two different markings: a unique manufacturer identification symbol – such as letters or an insignia – and information about the fastener strength. Length is measured from underneath the head and includes the square neck. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Material Grade Mark "A307" Thread M8-1. . Fastener Warehouse. Branch Manager; Inside Sales; Outside Sales; Sales Square Head Bolts. AFT offers both plain steel Grade 8 Carriage Bolts and zinc plated Grade 8 Carriage Bolts. Free Standard Shipping Tap Bolts Carriage Bolts Elevator Bolts Hanger Bolts Eye Bolts Flange Bolts Hex Bolts & Cap Screws Lag Bolts Plow Bolts Square Head Bolts Step Bolts Structural These carriage bolts feature steel material and a zinc finish. Bolt head marking (ABI) appears on head of each bolt and is registered with the U. 436" Head Diameter (Maximum): 0. Head Diameter (Minimum): 1. Grade 8 bolts are made of medium-strength carbon or alloy steel and can be finished in a variety of coatings and platings for added corrosion resistance and lubricity. Carriage Bolts & Hex Nuts 5055331818959. However, the SAE J429 specification that covers grade 8 fasteners does not require grade markings for studs (fully threaded rods) or slotted and cross recess head products. 9 12. Length (Nominal): 100mm The most common bolt grades are 8. 344" Head Height, Overall (Minimum): 0. Hex Cap Screws : Hex Tap Bolts. All sizes up to and including 150mm are fully threaded and lengths 160mm and above Head Diameter (Minimum): 1. Bolt heads and nuts are often marked with numbers, letters, dashes, slashes, dots, or an assortment of other marks. Use these nuts for all types of jobs that feature Hardwood or Softwood timber. The last episode of "MY CLASSIC CAR" I watched there was a guy from NPD on with Dennis showing some of the new items they now have, one was a complete fastener package for "67-72" Chevy truck restorations. Abrading & Polishing; A Carriage bolts are a type of fastener that consists of a cylindrical head with a flat and smooth bearing surface, a short square neck, and a threaded shank that extends through Buy Online from Aspen Fasteners | Free Shipping | M12-1. Note: Some bolts share identical head identification and have significantly different strengths. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Six radial lines 60 degrees apart Head Diameter (Minimum): 1. Technical Details. In addition to the "BD" marking, the product may be marked with 6 radial lines 60° apart. Fastener manufacturers mark the heads of their bolts and screw with the identification mark. Learn Bulk pricing and Free Shipping on #10-24 x 1" (FT) Coarse Thread Carriage Bolt Low Carbon Steel Black Oxide. Nominal Size or Basic Product Diameter E A H O P Q Head Diameter Head Height Square Width Square Depth Corner Radius On Square Carriage Bolts. 9 would have a 12. 75 X 40mm DIN 603 / ISO 8677, Metric, Carriage Bolts, Round Head, Square Neck, Class 8. There are 100 OEM, 86 ODM, 13 Self Patent. The portion immediately below the mushroom head, however, is formed into a square section. 5 x 9 x 24 cm; 130 g : Item model number ‎08180CBP : Cup head bolt: Alternate names: Carriage bolt Bumper bolt: Size: M5: Shank diameter: 5mm: Length (measured from under the head) 16mm. Custom Machining. 25 X 70mm DIN 603 / ISO 8677, Metric, Carriage Bolts, Round Head, Square Neck, Class 8. 094" Head Height, Overall (Maximum): 0. 2 Technical -> Bolt Head Markings M6-1. Some sizes do not have head markings, we have no control of this as it depends on the stock available at the time; Thread Pitch I've looked high and low for a document telling me what head markings to use on my Feb 43 MB - no luck so far. 18-8 Stainless Steel Bolt . 0292 | Local: 585. Bolt markings are not just random symbols; they carry specific information about the bolt’s properties and quality. xlsx each grade containing distinctive head markings. Some sizes do not have head markings, we have no control of this as it depends on the stock available at the time; Thread Pitch Vintage bolt head marking Vintage bolt head marking. 9 mark. A square neck keeps them from turning when tightening a nut. 8 mark, a class 10. Metric. Box 2053 FastenersClearingHouse. 970. Shop TIMCO BZP Carriage Bolt and Hex Nut - M8 x 180 - Zinc - Pack of 2. Sadly the rest of/useful sizes all do . Bolt Head Markings And Grades; Machine, Sheet Metal, and Thread Cutting/Thread Forming/Thread Rolling Screws Technical Information; Ensure a secure fit with a 1/2-inch drill bit for a 1/2-inch carriage bolt. Tie Rod Turn Buckle Clevis. For anyone who, like me, previously did not know what a carriage bolt is: (The square block at the top, when hammered into the material you're using, will grab and secure the bolt, supposedly. American Society Purchase Carriage Bolts from Fasteners Plus Explore our extensive selection of high-quality carriage bolts at Fasteners Plus, your ultimate destination for all your fastening needs. Finished Hex Nuts provide the approximate minimum tensile strength of the bolt. Hot dip galvanized to meet ASTM Specification F2329. ASTM A307 bolts, threaded rod and studs, are the most commonly used fasteners, covering two grades of chemical and mechanical requirements from 0. O. Applications/ Advantages Same design advantages as a low carbon carriage bolt but for use in environments which require general atmospheric corrosion Although markings are shown on hex heads, grade markings apply equally to products with other head configurations. Click on a product # for additional info. Society of Automotive Engineers (SAE) fasteners have radial lines for identification. Was wondering if anyone knows what the triangle means? The short answer is yes. By tcslr October 28 in Technical. 304 Stainless Steel Bolt Head Markings Metric bolts made of 304 stainless steel are marked on the bolt head with A2-70. com Cup Head Coach Carriage Bolts are used to attach wood to wood or steel with a matching nut to clamp the materials together. Special bolt tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo. They are made from 17%–19% chromium and 8%–13% nickel alloy steel. In this article, we’ll take a look at three standards from ASTM: 1. Crap! I got all excited when I saw the first pictured bolt had no markings on the head . Whether you're working on a DIY project, construction, or professional assembly, our collection features a range of sizes, materials, and Bulk pricing and Free Shipping on #6-32 x 1 1/4" (FT) Coarse Thread Carriage Bolt Low Carbon Steel Zinc Plated. Alloy Steel, quenched and tempered. com, The FCH Network, your source for ISO 8678 ISO 8678 Carriage Bolt With Cup Head and Short Neck JIS B1171 and coating Type=zinc/yellow. In this comprehensive guide, we will explore the different types of markings found on stainless steel bolts, what they signify, and how to read and interpret them. They show examples of the typical bolt grade markings for each bolt grade. 265. Although markings are shown on hex heads, bolt-nut_ident. Hex Bolt Identification, Markings and Strength Chart. 9. 11 Item(s) Head Diameter (Minimum): 0. 9 would have a 10. All carriage bolts have certain amount of both tensile and shear strength, depending on the grade and material of the fastener. 8" Thread Length: Standard Thread Length; Thread Direction: Right-Hand Thread; Material: Steel; Most grade 8 bolts require a permanent marking symbol that is designated by 6 radial lines. In the Pacific Northwest, they are referred to as economy bolts. Share No head markings Graham Owners Club International - Willys Overland Knight Registry - Buick Club of America -Horseless Carriage Club of America, Subaru 360 Driver's Club Posted October 29 (edited) GM had a Our suite of comprehensive technical tools is designed specifically to provide engineers, architects, and the construction industry with a one-stop shop for technical fastener information. Nuts Our inventory of nuts include both domestic and import and are compatible for many grades of bolts in either plain or hot dip galvanized finish. Known for their distinctive round, domed Hex Bolt Identification, Markings and Strength Chart Table Guide. The markings vary from head to head as they are not universal. 907" Head Diameter (Maximum): 0. c) The standard specifies only minimum thread length for carriage bolts. About SSL Certificates . All sizes up to and including 150mm are fully threaded and lengths 160mm and above all have 150mm thread length. Cup Head Bolt (316) Stainless : M6 x 25mm Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Carriage bolts are designed with a smooth, dome-shaped head and a square section under the head that grips into the material when tightened. Commonly used in treated lumber these bolts have a completely smooth head (no markings) to give it that nice, finished appearance. All Grade BD products shall be marked "BD". Carriage Bolt - Ribbed Neck The type of carriage bolt is having the same head shape as the standard one. The Rockford Bolt & Steel quality control laboratory is ISO/IEC 17025 accredited by NVLAP, lab code 200255. 782" Head Diameter (Maximum): 0. You can identify a Grade 8 bolt by looking at its head markings. Discover more carriage bolt grade markings that can hold materials together for structural stability. The markings are an indication of the fastener's make, m Bolt heads and nuts are often marked with numbers, letters, dashes, slashes, dots, or an assortment of other marks. A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. A square-shaped collar under the head prevents the bolt from turning during installation and provides additional support against tensile and shearing forces. At Portland Bolt, we understand your profession’s unique challenges and demands, which, is why we’ve developed a range of tools to streamline your workflows, enhance precision in Bolt Head/Wrench Size; Recommended Bolt Torque; Standard Thread Length for Bolts; Threads Per Inch Table (Coarse and Fine) US Bolt Diameter and Thread Chart Our printable 'lay-over' sizing chart for identifying US bolt diameter and thread count. They are used in marine and wood applications. 3. It's no secret that we are known as experts in the fastener industry and have been since 1912. These radial lines indicate that the bolt is a Grade 8 bolt. Published on. 0 X 10mm DIN 603 / ISO 8677, Metric, Carriage Bolts, Round Head, Square Neck, Class 8. Typically lengths 6" and under, will be fully threaded. Carriage bolts are pushed into a hole with the same diameter as the shank and then often hammered into place where the square shoulder locks them in place. As the nut is tightened or loosened, the ribs prevent the bolt from turning. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Material Grade Mark "A307" Thread Head Diameter (Minimum): 0. Head Style Detail: Square Neck; Head Zonon Stainless Steel Carriage Bolts and Nuts Kit Round Head Square Neck Carriage Bolts Screws and Hex Nuts and Flat Washers, Stainless 18-8 Full Thread Coverage Bolts heads of different types are stamped with differing markings for two purposes. Finally, our last example from SAE J429: Here we have a bolt head with the Wilson-Garner manufacturer mark and six radial lines. 188" Head Height, Overall (Maximum): 0. They are often used in applications where a smooth finish surface is needed for security, safety, and appearance. Careers. specific Common Head Markings, bolts, markings, bolt, grade, 2, 5, 8, 9, stainless steel, L7, A325, B7 Interested in what metric bolt and screw head markings mean? It has to do with their grades. bolts attaching items to ASTM A307 Bolts, Threaded Rod, Grade A, B. Modern Carriage Bolts in sizes from #6-32 x 1-1/8" to 3/4" x 24". 086" PRODUCT ATTRIBUTES. Additionally, low-grade bolts, such as Designers and contractors use many different fasteners with different head markings for many different applications. 6. 1-800-479 Head Markings: Material Grade Mark "8. 469" Head Height, Overall (Minimum): 0. Many of our customers prefer the "traditional" carriage bolts, without head markings. Carriage bolts can have either a square or hex head, and may have a ribbed neck rather than a square neck. Note: Thread length on carriage bolts can vary. 75 x 25: c/b short neck f/t iso 8678: 15,800 . 25" Head Height, Overall (Maximum): 0. 18-8 Stainless Steel Bolt; Composed of 17%-19% chromium and 8%-13% nickel, the markings on these bolts can vary as there is no universal standard. They show examples of the typical bolt grade These carriage bolts feature steel material and a zinc finish. 969" Head Height, Overall (Minimum): 0. Similarly to US bolts available across the country, the markings on British bolts and screws can give you more information than you think. Carriage Bolts. Kyle Domer January 24, 2021. Nuts and bolts are designed to withstand a specific amount of tension and pressure. We supply guard rail bolts, hex and structural heavy hex head bolts, carriage bolts, round and square head bolts, threaded rods, and studs. Some sizes do not have head markings, we have no control of this as it depends on the stock available at the time; Thread Pitch These bolts are ideal for heavy-duty applications requiring high structural integrity. The package contains every fastener on the vehicle along with an inventory sheet showing where each fastener is used,the kit is made by AMK A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. At Gaffney, all of our bolts are domestic made and certification of material and labor can be given to that effect. AFT Fasteners provides a helpful resource on carriage bolts including: carriage bolts sizes charts, specifications on galvanized carriage bolts, grads 5 & 8 carriage bolts, and stainless steel, plus material, hardness, strength and Fastener manufacturers mark the heads of their bolts and screw with the identification mark. The following markings are the primary indicators used Headed bolts are required to be stamped on top of the head, while most rods and some bent bolts are required to be stamped on one end. Bolt Head Markings And Grades; Machine, Sheet Metal, and Bolt head markings have a specific purpose that will help you understand the fastener more in-depth. Bolt Gauges Carriage Common Head Markings Counter Bore Elevator Flanged Head Plow Heavy Hex Head Heavy Hex Head Specs Hex Head Cap Hex Tap L-Anchor Proof Load Tensile Scraper Blade Square Head Step T-Slot Tightening Torque. Applications/ Advantages: Low Usually fastener standards specify two types of marks to be on the head of a bolt. ) Unfortunately, this setup isn't working the best for me. Grade A307A Carriage Bolts. 9 - Alloy Steel, quenched and tempered Special Fasteners installed around the World are seen in every conceivable use with the letters “HF” marked clearly on the heads. 844" Head Height, Overall (Minimum): 0. But what do they mean? In this video our fastener spe BOLT HEAD MARKINGS and Strength Standards -- UT-121. The "Grade Mark" is a standardized mark that identifies the material properties that the fastener Answer: SAE J429 is a Society of Automotive Engineers specification for bolts covering “the mechanical and material requirements for inch-series steel bolts, screws, studs, sems 1, and U-bolts used in automotive and related industries in sizes to 1-1/2 in inclusive. Bolt Head/Wrench Size; Recommended Bolt Torque; Standard Thread Length for Bolts Grade 2 ; is about half as strong as medium-grade steel and is used for light-duty fastening. 75 x 25: c/b short neck f/t iso 8678: 15,800 Grade 8 Bolts. Grade 8 Carriage Bolts are made from a medium carbon alloy steel and heat-treated. Fully threaded up to and including 150mm, partially threaded thereafter. 2. e. They are supplied as fully threaded only. Can be Carriage bolts have smooth, domed heads with a square section underneath that pulls into the material to prevent spinning during installation. Hence, they encompass a variety of bolt types to accommodate different fastening needs, including hex bolts, carriage bolts, anchor bolts, eye bolts, and U-bolts. 8" Thread Length: Standard Thread Length; Thread Direction: Right-Hand Thread; Material: Steel; Timber bolts are also referred to as dome head, fender head, safety head, and mushroom head bolts. Free Standard Shipping Tap Bolts Carriage Bolts Elevator Bolts Hanger Bolts Eye Bolts Flange Bolts Hex Bolts & Cap Screws Lag Bolts Plow Bolts Square Head Bolts Step Bolts Structural A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. 8, 10. Cup Head Coach Carriage Bolt & Nuts are used to attach wood to wood or steel with a matching nut to clamp the materials The markings on a stainless fastener indicate the grade of material and strength, e. Metric graded bolts are identified by the head markings on the top of the bolts, and the number will be marked. A325 Type 1 bolts may also be marked with 3 radial lines 1200 apart in addition to the A325 marking. com DESCRIPTION: Low Carbon Steel Carriage: Round head bolt with a square neck under the head, and a unified thread pitch. Head Style Detail: Square Neck. Free Standard Shipping* *In the Continental US. 5 X 35mm DIN 603 / ISO 8677, Metric, Carriage Bolts, Round Head, Square Neck, Class 8. 1,100. Showing 1–16 of 35 results Carriage Bolt Since the finished bolt length of 12” is measured from the end of the bolt to the underside of the head, we must add 1-11/16” to the cut length of the bolt. What Are These Numbers? Bolts are made at different strengths. g. 713-462-3147) Grade 5 ASTM-A449 SAE-J429 : Size Hardness Rockwell Proof Load Yield Strength Tensile Strength min. The ribbed neck carriage bolt is Alibaba offers 143 Bolt Head Marking Suppliers, and Bolt Head Marking Manufacturers, Distributors, Factories, Companies. Bolt Head Markings And Grades; Machine, Sheet Metal, and Thread Cutting/Thread Bolt Head Markings And Grades; Machine, Sheet Metal, and Thread Cutting/Thread Forming/Thread Rolling Screws Technical Information; Tap Bolts Carriage Bolts Elevator Bolts Hanger Bolts Eye Bolts Flange Bolts Hex Bolts & Cap Screws Lag Bolts Plow Bolts Square Head Bolts Step Bolts Structural Bolts. The markings are an indication of the fastener's make, m Carriage Bolts 2b Square Neck Grade-5 & 8; 18-8 Stainless Description Round head bolt with a square neck under the head, and a unified thread pitch, made from austenitic alloy stainless steel. Boltport is a manufacturer of Carriage Bolts in metric and imperial sizes with coarse, fine, extra fine, and custom threads to various dimensional standards and material specifications. 888-660-0334 Bolt Head Markings And Grades; Machine, Sheet Metal, These markings provide information about the bolt’s strength, material, and manufacturer. 8: Zinc/Yellow: M12-1. The zinc plating resists corrosion in wet Bulk pricing and Free Shipping on 1/4-20 x 6 Coarse Thread Carriage Bolt Low Carbon Steel Black Oxide. For fasteners that are designed to be counter sunk such as flat head screws, the fastener is measured from the point on the head where the surface of the material will be, to the end of the fastener. 9, and 12. We are also a master distributor of various nuts and washers. Nuts included and markings visible on the domed head. Yield Strength: The maximum load at which a material exhibits a Most often, bolts used in machinery are made to SAE standard J429, and bolts used in structures are made to various ASTM standards. 032" Head Diameter (Maximum): 1. Round head bolt with a square neck under the head, and a unified thread pitch. Nominal Size or Basic Product Diameter E A H O P Q Head Diameter Head Height Square Width Square Depth Corner Radius On Square Carriage Bolts; Self-Tapping Sheet Metal screws; Self-Drilling TEK Sheet Metal Screws; Wood / Deck Screws; Hex Lag Screws / Lag Bolts; Nuts; Washers; Rivets; Cable Ties; Head Markings: Metric Bolt Class: Mechanical Properties: Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 12. Carriage Bolts & Hex Nuts - Zinc. Hardnesses are Brinell Hardness Numbers. The difference is the square shape under the head replaced with vertical ribs slightly wider than the diameter on the bolt. 28 TSI or 62,220 PSI The la We offer different types of wholesale bolts including carriage bolts, hex-head bolts, and toggle bolts. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Six radial lines 60 degrees apart By hammering in a carriage bolt, it will "grab" the edges of the hole and prevent it from twisting. Skip to main content NOTE: Partially threaded. Typically, this is the grade found in fasteners such as machine screws and carriage bolts. Gaffney Bolt Company P. Kind of says, "this car is as tough as the bolts holding it A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. NOTE: Nuts included and markings visible on the domed head. NOTE: Nuts Nuts included and markings visible on the domed head. 8" Head Style: Round Head. Fully threaded These type 18-8 stainless steel carriage bolts have a square neck to help keep the bolt in place during installation. Grade 2 ASTM-A307 SAE-J429 (Call us for specifications. This Fastener Identification Markings Chart shows the various marking Grade Identification Markings for Carbon Steel Externally Threaded Fasteners ion. It is important to note that not all bolts will have head markings. Sign in Head Markings: Material Grade Mark "A307" Head Style: Round Head. The underside of the large, rounded, low-profile head of a timber bolt has two nubs or fins which prevent the bolt from turning in the Head Diameter (Minimum): 0. The markings indicate the These type 18-8 stainless steel carriage bolts have a square neck to help keep the bolt in place during installation. Head Diameter (Minimum): 0. ; A307A ; is a heat-treated, medium-strength carbon steel. We clarify with definitions, examples, and photos in this article. Carriage bolts can have either a square or hex head, and may have a Bulk pricing and Free Shipping on 7/16-14 x 2 1/2 Coarse Thread Grade 8 Carriage Bolt Alloy Steel Yellow Zinc Plated. 1990 | Fax: 585. We offer them primarily in a black oxide finish. FastenersClearingHouse. Some sizes do not have head markings, we have no control of this as it depends on the stock available at the time; Thread Pitch In this comprehensive guide, we will explore the different types of markings found on stainless steel bolts, what they signify, and how to read and interpret them. Here is why: When bolts go through the hot-dip galvanizing process the zinc leaves an extra layer coating the bolt. K. Length (Nominal): 3/8" Material: Steel Head Diameter (Minimum): 1. While hex heads are shown, grade markings apply equally to products with other head configurat All specifications shall be marked by the manufacturer with a unique identifier to identify the manufacturer or private label distributor, as appropriate. This is normally a trade mark but can be an abbreviation of their company name or a symbol. The tables below give the head markings and some of the most commonly-needed information Many of our bolt styles are available in various grade and class options with each grade containing distinctive head markings. fastenersdirect. This size can change depending on the measurements that Head Markings; Specifications. Bolt Grades & Head Markings. Manufactured from Grade 2 Steel. Modern Carriage Bolts have Full Threads (up to 6" long), and Head Marks stamped on them (ie, "307A"). They can be found Understanding a Few Common ASTM Inch-Series Bolt Grade Markings. Holiday Lights; History; Home / All Products All Products. 27" PRODUCT ATTRIBUTES. ; Grade 5 ; is suitable for fastening most machinery and equipment. Written by. Bolt Head Markings sales@mainlandfasteners. Carriage bolt is the popular name given to the mushroom head square neck bolt, also known as cup square or coach bolts not to be confused with coach screws. This is the organization that accepts the responsibility that the fastener meets specified requirements. Traceability is important particularly in the Three radial lines will indicate an SAE grade 5 fastener, while six radial lines will indicate an SAE grade 8 fastener. 691. October 30, 2024. 8 Steel, Zinc Plated. Anchor Bolt; Common Bolts; FAQ; About Us. S. Carriage Bolts are full threaded. Therefore, you will not be able to visually identify a threaded stud that is certified to an SAE When it comes to A307A Carriage Bolts & Step Bolts, you can count on Grainger. Step bolts are preferred for use on wood connections (like decking), where the larger diameter head of the step bolt will not pull through the soft wood. Grade 5: Identified by 3 radial lines, these are made of medium carbon steel. Fastener manufacturers product identification starts with the manufacturer's symbol marked on the head, Once bolt is inserted in square hole, bolt is tightened without gripping the bolt head. IMPERIAL SOCKET SCREWS. Firstly, the head of the carriage bolt is rounded, creating a side Once bolt is inserted in square hole, bolt is tightened without gripping the bolt head. They have a greater load carrying capacity compared to a Grade 5 Carriage Bolt . The strength and type of steel used in a bolt is supposed to be indicated by a raised mark on the head of the bolt. 1 is a popular grade for sems 5. ”From SAE J429 regarding studs: 2. Yes. Length is measured from under the head. Services ( markings) iso 8678: 39,375: Contact_Supplier. 208" PRODUCT ATTRIBUTES. The standard type 18-8 stainless bolts have a completely smooth head (no markings) to give it that nice, finished appearance while the marine grade type 316 option does have 316 stamped on the head. Search. Made from low or medium carbon steel. Buy Online from Aspen Fasteners | Free Shipping | M8-1. 083" Head Height, Overall (Maximum): 0. powder coat would be the way to go. nz 03 366 5590 . The advice out there (and this seems to be confirmed from my limited experience) is that: 1. The Importance of Bolt Markings. 8 Steel, Zinc Plated View all parts in this category. Although Hague Fasteners only A carriage bolt is an externally threaded fastener designed with a square or round head and a smooth body with no markings. Carriage bolt length is measured from under the head to the end of the bolt including the square neck. Buy Online from Aspen Fasteners | Free Shipping | #6-32 X 3/8" Carriage Bolts, Round Head, Square Neck, Full Thread, A307 Steel, Zinc. Each grade is having its distinctive head marking and it is the primary indicator of its use. 9 mark, and a class 12. Q & T - Quenched and Tempered. Toggle Menu MENU. Let’s look at a few! It is typical to find British series bolts with letters stamped on the head like the picture above. This is a bolt head with no markings and is made of low or medium carbon steel. 219" Head Diameter (Maximum): 1. Add All Entered Main Page: Hex Head Cap Screws, Hex Tap Bolts, Heavy Hex Head Screws, Square Head Bolts, Carriage & Shaker Screen Bolts, Elevator Bolts, Step Bolts, T-Slot Bolts, Flanged Bolts, Counter bore Bolts, L-Anchor Bolts, Scraper Blade Blots, Head Plow Bolts, Bolt Gauges, Common Head Markings, Tightening Torque Guide, Proof Load Tensile Carriage bolts have no wrenching form on the head, and they are usually supplied with a hexagon nut. This is easier to identify than an SAE-graded bolt for most people. Unlike the previously mentioned I need to replace a bolt and all I got is a triangle sign on the bolt head with 6 lines ae shown on my attachment. 25 X 100mm DIN 603 / ISO 8677, Metric, Carriage Bolts, Round Head, Square Neck, Class 8. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Material Grade Mark "A307" Body Cup Head Coach Carriage Bolts are used to attach wood to wood or steel with a matching nut to clamp the materials together. Shop a wide selection of high-quality silicon bronze bolts, including carriage and hex bolts, at Fastener Solutions. 1 is a popular grade Buy Online from Aspen Fasteners | Free Shipping | 5/8"-11 X 2" Carriage Bolts, Round Head, Square Neck, Full Thread, A307 Steel, Zinc. Back to filing, painting and hiding the ugly ones under the cp again. This design allows carriage bolts to be self-locking when inserted into a pre-drilled hole. bolts attaching items to US bolt head markings Metric bolt head markings 8. This article provides a step-by-step guide on how to select the right size drill bit, prepare the drilling area, drill the hole carefully, and test fit the bolt for stability. Such markings differ based on how the fasteners were made. co. The ones I did were stainless carriage head bolts. Bulk pricing and Free Shipping on #8-32 x 2" (FT) Coarse Thread Carriage Bolt Low Carbon Steel Zinc Plated. The ASTM standards also include: A307 Grades A and B; A193 Grade B7; A354 Grades BC and BD; Metric Bolt Head These type 18-8 stainless steel carriage bolts have a square neck to help keep the bolt in place during installation. They can be found Do you have a pergola project that you’re planning to do, and do you want to know the size of carriage bolts to use? You’ve come to the right place, for we have researched this question, and we have the answer for you. They are perfect for your upcoming project! Metric graded bolts are identified by the head markings on the top of the bolts, and the number will be marked. While SAE J429 Grades 2, 5, and 8 are probably the most common inch-series fastener specifications that we deal with here at Wilson-Garner, there are plenty of other ones with their own grades and head markings. Identification Grade Mark: Specification: Description: Material Fasteners bear all forms of markings on their heads, from number and letters, to shapes and hash marks. Buy 5pc Carriage Bolt & Nut Zinc / GI Round Head Coach Bolt and Nut 3/8" ( 3/8 - 16T ), METRIX online today! These round head carriage bolts are for light to medium duty fastening. SQUARE NECK CARRIAGE BOLTS 545 Basket Road Webster, NY 14580 Toll Free: 800. 278" Head Diameter (Maximum): 0. 071" Head Height, Overall (Maximum): 0. Their strength is indicated by markings on the head. For fasteners where the head usually sits above the surface such as hex bolts and pan head screws, the measurement is from directly under the head to the end of the fastener. The markings indicate who manufactured the bolt and also identify the standard to which the bolt was made. How to Identify a Grade 8 Bolt. They are perfect for your upcoming project! Carriage Bolt - Ribbed Neck The type of carriage bolt is having the same head shape as the standard one. These are the most common household grade of bolts and also the least expensive. 8 would have an 8. Find high quality Bolt Head Marking Suppliers on Alibaba. This is the When I found that other 5/16"-18 bolts fit just fine, I got curious and eventually tried every 5/16"-18 bolt that I had. These bolts are commonly used in wood-to-wood connections or where the bolt head needs to sit flush with the surface. It is used in woodworking and construction Buy Online from Aspen Fasteners | Free Shipping | 1/2"-13 X 9" Carriage Bolts, Round Head, Square Neck, Full Thread, Grade 8 Steel, Yellow Zinc. Some sizes do not have Choose carriage bolts from ASMC for smooth, streamlined finishes in woodworking and structural applications, ensuring sturdy and aesthetic results. 114" PRODUCT ATTRIBUTES. Hex Bolt Identification, Additonal information on bolts is located at the bottom of the webpage. Portland Bolt has the capability to manufacture bolts customized for your company. As with the metric fasteners, the imperial bolts are also marked with letters that denotes the manufacturer. The markings indicate a fastener’s grade and strength (material properties), aid in easy identification and accountability, and even tell its origin. The square neck locks the bolt in place while the nut is tightened. Manufacturer ‎TIMCO : Part Number ‎08180CBP : Product Dimensions ‎1. 304 and G316 grade stainless will have one of the following: A4-70, G316, A4, 316. Modern Carriage Bolts have Full Threads (up to 6" long), and Head Marks Grade 8 Carriage Bolts are made from a medium carbon alloy steel and heat-treated. Patent Office per the Fastener Insignia Act. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Three radial lines 120 degrees We are the Industry Experts. 219" Head Height, Overall (Maximum): 0. This extra layer of zinc Usually fastener standards specify two types of marks to be on the head of a bolt. Commonly used in treated lumber these bolts have a completely smooth Largest range of all types of bolts and nuts, socket screws, washers, machine screws, rivets, screws, self-drillers, boat hardware, masonry fasteners. Low Tensile (Imperial) Grade 2 72,000 psi Imperial Bolts: The tensile strength is measured in tons per square inch or 1000’s of pounds per square inch. An SAE J429 Grade 8 bolt’s head marking will show six radial lines like this: Portland Bolt has the capability to manufacture bolts customized for your company. AFT offers both plain The ASTM A449 specification is somewhat ambiguous when it comes to the marking requirements. What It is important to note that not all bolts will have head markings. Material Stainless steel Grade 304: Finish: Natural: sourced from various suppliers, therefore differences may exist between batches such as height, width, visible stamped markings, appearance or actual finish; Common Bolt Head ID Markings . Brochure Page A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. I was amazed to find thirteen different sets of letters (and Cup Head Coach Carriage Bolt & Nuts are used to attach wood to wood or steel with a matching nut to clamp the materials The markings on a stainless fastener indicate the grade of A carriage bolt is a distinctive bolt which comes with a mushroom head and a circular shank cross-section. Full chemical and physical reports on each product are available. They can be found US bolt head markings Metric bolt head markings 8. Additonal information on bolts is located at the bottom of the webpage. Hot-Dip Galvanized Steel Carriage: Carriage bolt made from low or medium carbon steel with a galvanic zinc finish applied. 298" Head Diameter (Maximum): 0. 313" Head Height, Overall (Minimum): 0. The following marki. BROWSE CATALOG. material G304 grade will have one of the following markings: A2-70, G304, A2, 304 and G316 grade stainless will have one of the Carriage bolts are designed with a smooth, dome-shaped head and a square section under the head that grips into the material when tightened. Grade 2, 5, and 8 are the most common grades of fasteners according to the Society of When it comes to securing materials with strength and precision, carriage bolts are a go-to choice for many builders and DIY enthusiasts. The bolt grade markings are illustrated in the charts. The ribbed neck carriage bolt is Start studying Bolt head markings. FastWare: Sask: Carriage Bolt: Class 8. While hex heads are shown, grade markings apply equally to products with other head configurations. A class 8. are usually used to fasten metal to metal or metal to wood. Grade 8 ; is used in high-stress applications, these bolts are 25% stronger than medium-strength steel fasteners, Head Diameter (Minimum): 0. After cutting the bolt to length , this added material (1-11/16”) is heated to approximately 2000 degrees Fahrenheit and forged into whatever head style the specific bolt requires. Product information . 1 Head Markings Metric Bolt Class Mechanical Properties Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) - Class 12. 344" PRODUCT ATTRIBUTES. A smooth, rounded head provides a finished look. Category: Carriage Bolts; System of Measurement: Inch; Brand: Aspen Fasteners® Head Style: Round Head; Head Style Detail: Square Neck; Head Markings: Six radial lines 60 degrees apart Smith Brothers Services, LLC 3212 State Route 94 Suite 9 Franklin, NJ 07416 (973) 209-7569 sales@smithbrothersservices. 328" Head Height, Overall (Minimum): 0. Therefore, you will not be able to visually identify a threaded stud that is certified to an SAE Cup Head Coach Carriage Bolts are used to attach wood to wood or steel with a matching nut to clamp the materials together. The common size of carriage bolts used for posts and bearers of pergolas is 10 inches. Below, we’ll explore both of those concepts, then Carriage bolts are recognizable by their round, wide, domed heads and square neck. Pack contains 10 pieces. Additionally, low-grade bolts, such as These type 18-8 stainless steel carriage bolts have a square neck to help keep the bolt in place during installation. Our devotion to customer service, quality products, and on-time deliveries have propelled us to success since our inception. The most common bolt grades are 8. I used them to fill some holes, one where a mirror was mounted, the other where an emblem was, I prefer the industrial look of bolts with markings. If you still have questions not addressed in the chart, don't hesitate to contact us for help. The manufacturer's mark is a symbol identifying the manufacturer (or importer). The bolt types are available in varied grades and class options. Anchor Bolts; Forged Bolts; Nuts and Washers; Concrete and Other Products; Construction Fasteners. While the requirements are perfectly clear for hex bolts and studs, the Choose from our selection of carriage bolts, including over 900 products in a wide range of styles and sizes. The type of mark depends on the standard to which the bolt The grades are typically indicated by markings engraved on top of the bolt head, which may show up as raised numbers or dashes. Head Markings. Back to The goal of Gaffney Bolt is to maintain a manufacturing system that ensures on-time delivery of quality fasteners to our customer. Cup Head Coach Carriage Bolts are used to attach wood to wood or steel with a matching nut to clamp the materials together. The number after the decimal, when multiplied by 10, will provide the approximate yield strength percentage in relation to the minimum tensile strength. mvazny fdsx sjmy jfxpnud wnxr uxigd ctlgso kap qtw drfu