Metric bolt grades and sae

8, 8. Metric bolt grades and strength calculator was developed to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and  Metric Thread Bolts, Screws and Studs are identified by a letter M for the thread The table below specifies steels for the different property class of bolts, screws  Simple common SAE bolt head markings and related strength. pdf US Bolt Materials Metric Nut Class SAE J429 Normally Used Grades ASTM Grade 4. While hex heads are shown, grade markings apply equally to products with other head configurations. 1/2″ bolt head and 1/2″ wrench). Medium carbon steel, quenched & tempered. Anybody have insight into why the strongest bolt in the SAE classification system is a lower tensile strength than the highest in the Metric classification? (Grade 8 vs. Parts, Inc nuts; hex head bolts; double end studs SAE J995 Grade 5 hex nuts. ISO 12258:1998 SAE AS 4108C-2018 T-Bolt and Eye Bolt, A286 of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. Hex head bolts M5 and larger must have the property class marked on the head of the bolt, either in raised or depressed lettering. The yield strength of the bolts is 940 and the  ENGLISH/ METRIC BOLT SUBSTITUTION TABLE. A company does not have to buy a large quantity in order to get great prices when working with Metric Bolt. (ASME), the American Society of Materials and Testing (ASTM), SAE . 6 4 or 5 1 A307, Grade A the diameter of a Metric Bolt Torque Table, torque specs estimated with clamp load as 75% of proof load as specified in ISO 898-1. 9 12. The SAE Grade 2 covers bolts from 1/4 inches to 3/4 inches in diameter and length of 6 inches or below and studs of all lengths and is equivalent to ASTM A307 Grades A or B. The metric property classes (grades) of strength are defined by two numbers separated by a dot, where increasing numbers represents an increasing tensile strength. 8, 10. 8 SAE J123 MAR1994 Surface Discontinuities on Bolts, Screws, and Studs in Fatigue Applications SAE J174 MAY1998 Torque-Tension Test Procedure for Steel Threaded Fasteners—Inch Series SAE J174M MAY1998 Torque-Tension Test Procedure for Steel Threaded Fasteners—Metric Series SAE J238 MAY1998 Nut and Conical Spring Washer Assemblies Portland Bolt is happy to help if you have specific questions or needs. Includes data for fastener stress analysis. A bolt with a six sided head. SAE J429 Grade 8 Fasteners Manufacturer & Supplier Manufacting high-class SAE J429 Grade 8 Fasteners in India Buy SAE J429 Grade 8 Fasteners, SAE J429 Nuts, SAE J429 Bolts, SAE J429 Screws, SAE J429 washers for perfect connection & critical applications, excellent pricing and extensive size range of SAE J429 Grade 8 Fasteners, 10% sale on SAE J429 Grade 8 Fasteners only on 50000 pcs. ,10. Additonal information on bolts is located at the bottom of the webpage. About 62% of these are . We cannot manufacture metric sizes or bolts to metric grades, and we are not able to make recommendations, but we can work with you to determine what is feasible and cost effective if a substitution is allowed. ASTM A 193. 8. Manufacturers emboss International Standards Organization (ISO) metric bolts larger than 6mm in diameter with either “ISO M” or “M” on top of the head. There are over 150 different grades and surface finishes of stainless steel fasteners and stainless bolts that are available. Most people think a bolt is a bolt is a bolt. In the American world (a. MARYLAND METRICS Technical Data Chart A short general listing of popular materials International Material Grade Comparison Table The standards that correspond with DIN Material Numbers can only be compared approximately. In keeping with the ISO Quality Standards, all departments at AALL AMERICAN Fasteners work to ensure and maintain a high level of quality. Stainless steel fasteners are made from a steel alloy that contains a minimum of 10. Typically the diameter of a metric bolt is preceded by a capital M to designate metric. 5/16-24 x 1 is a 5/16 diameter bolt with 24 threads per inch and 1 inch long (fine). Metric bolts use distance between treads as the designate. Metric bolts have various combinations of numbers marking their heads. " Metric bolts list measurements in millimeters. Grade B. Fasteners smaller than M5, and those with slotted or recessed heads, whatever their diameter, need not be marked. english/ metric bolt substitution table equivalent metric bolt substitution – astm grade bolt sizes f - 568 class 4. Note: Some bolts share identical head identification and have significantly different strengths. If your fastening application calls for standard or non-standard metric fasteners, or if you just have a question about the markings on your fasteners or assembly, call us at 1-866-501-9504 and Mr Zinc Plated Alloy Steel is a common material that fasteners are manufactured in. 9 Bolt Grades I have been on a quite a few online email lists over the last 7 years or so, basically since they first came out. Bolt, Grade 12. Metric marking. METRIC IMPERIAL (Grades) METRIC (Classes) TENSILE STRENGTH COMPARISON INCH & METRIC Ibf/in˜ (PSI) Mpa (N/mm˜) MATERIALS, MECHANICAL PROPERTIES AND MARKINGS COARSE & FINE METRIC INCH Class 8. From the original Jeep-L list to the XJ-list to the Rockcrawler. 9, and 12. 2x15. ASTM F1554 Grades 36, 55, and 105. F - 568. Grade 2 bolts ( A307) are a standard hardware grade steel. Hex Bolt Identification, Markings and Strength Chart Table Guide. com Subject: Metric Bolt Classes Keywords: Metric Bolt Grades; Metric Bolt Classes; Bolt Grade Markings and strength chart; Metric bolt tensile strength; Metric Bolt Identification; Bolt class 4. Tensile Strength (psi / MPa) US Bolts No Markings Grade 2 Low or medium carbon steel 1/4 thru 3/4 Metric steel hex bolts from M6 to M16 in grade 8. Contact American Fastener with any questions or for a custom quote. EQUIVALENT. 2. The highest metric class for strength, it exceeds Grade 8. 9 fasteners according to ISO 898-1. Grade 8 Metric bolt conversion data for industrial bolts/rods, machine screws and small diameter fasteners from Raaj Sagar Steels includes metric to standard bolt conversions. 8 Metric Bolt diagram. grades of inch-sized bolts SAE grades. A Mega Pascal is equivalents to about 145 PSI. There are three common grades for SAE (fractional) and four common grades for metric fasteners. a. g. “SAE” is a shorthand for a set of standard size parts and tools in USCS (e. US and METRIC STEEL BOLT GRADES SAE 2 SAE 5 SAE 8 ALLEN SAE ID Marks No Marks 3 Lines 6 Lines None Material Low Carbon Medium Medium High Carbon Carbon Carbon Tempered Quenched Quenched & Tempered & Tempered Tensile 74,000 psi 120,000 psi 150,000 psi 160,000 psi METRIC METRIC METRIC ALLEN ID Marks 8. Common ASTM grades include A307, which roughly corresponds to SAE Grade 2. Nuts are almost always used in conjunction with a mating bolt to fasten SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on. 9. 9 Socket Head. Bolt A 307 Gr A/B Blk 67612 12/8/1998 AB A B RSI M/C APPR 4399-01 Alpine Bolt & Forming Marengo IL Bolt A 307 Gr A/B Gv 67614 12/8/1998 AB A B RSI M/C APPR 4399-01 Alpine Bolt & Forming Marengo IL Bolt A 307 Rnd Head Gv 67631 12/8/1998 AB A A B RSI M/C APPR 4399-01 Alpine Bolt & Forming Marengo IL Strength Requirements by Grades. There are three grades within this specification, 36, 55, or 105. Available grades run from 2 to 8, with 8 the strongest. Therefore, an oil labeled as 10W-30 must pass the SAE J300 viscosity grade requirement for both 10W and 30, and all limitations placed on the viscosity grades (for example, a 10W-30 oil must fail the J300 requirements at 5W). get more time I'll add more then the SAE Bolt Marking for Imperial which are different for Metric. 9 this  Grade 2. Always refer to vehicle Widespread Industrial supplies products like Metric Fasteners for many diverse industries, including - Oil Refineries, Automotive Repair and Maintenance, Machine Shop, Metro Maintenance Shops, Manufacturing Plants, MRO Facilities, County Correctional Facilities, City and County Maintenance Yards includes all bellow hardware. Identifying bolt grades and head markings for US grades 2, 5 and 8. The bolt is stressed up to the proofload value, and if there is no deformation, elongation, or fracture, then the bolt is deemed to have passed. Bay Bolt - Bolts We are a company that serve the manufacturing, contruction, and water works industries. Most car guys will remove, install and replace bolts many times and never look at bolt grades. Grade 5 – bolts manufactured from medium carbon steel. Figure 1. Hillco Fastener Warehouse ARP Hex Flange SAE (Fine Thread) ARP Metric Hex Flange The below chart refers to usage in steel. What do the Report Scoring Metric choices on the Class List and Grade List Report mean? What does the grade of a metric bolt mean and how do they compare to SAE grades? SAE Standards For Bolts The SAE has established a sequence of grades from 0 to 8 for steel bolts, on the basis of the metal from which the bolt is made and the manner of manufacture. 8 or 10. 9 bolts meet ASTM A324 grade BD and SAE J429, grade 8 standards. Oct 30, 2014 Need to know how to read bolt grades to complete your project car? to read bolt grades using our handy step by step guide for metric or SAE. The specialist further explains the types of grades some materials come in, how to identify said grades, and their various properties. 8 bolts are  Strength Specifications of Metric Threaded Fasteners In the case of a 8. com Examples of hardened fasteners are steel bolts - US Grade 8 (Metric property class 10. 3/4-10 METRIC BOLT ULTIMATE TENSILE STRENGTH BY ISO PROPERTY CLASS  Items 1 - 10 of 233 Our metric grade 10. Metric Bolt Conversion Metric bolt conversion data for industrial bolts/rods , machine screws and small diameter fasteners from Elgin Fastener Group includes metric to standard bolt conversions. Bolt Chart Grade Sae And Metric. For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel  Metric bolt conversion data for industrial bolts/rods, machine screws and small diameter Metric Nut Class, SAE J429Normally Used, Grades, ASTM Grades. Some bolts are not available in different strength grades while certain steel types are offered in SAE (Society of Automotive Engineers) Grade 2, 5 or 8; head markings identify grade. 8 bolt has a nominal tensile strength of 800 N/mm2 SAE Grade 5 (120,000 psi tensile strength) is equivalent to metric  Steel Bolts - Metric Grades · Steel Bolts - SAE Grades. " See Understanding Fastener Grades and Classes for a comparison between metric and inch series strength grades. Bolt torque, the amount of force required to tighten a bolt, is listed according either to the Society for Automotive Engineers (SAE), which uses U. Zinc-Plated Grade 5 Fine Thread Hex Bolt SAE J429 bolts from Glaser and Associates are available in three grades, 2, 5 and 8, offering different mechanical and chemical properties for specific applications. 8; Bolt class 10. Yield Strength (psi / MPa) Min. com board, a common question comes Manufacturers of bolts and/or machines establish torque specifications for their components and the nuts and bolts that hold them together. Everbilt 3/8 in. 1 Metric hex nuts; 2. 8 10. Zinc plating creates corrosion resistance and gives the bolts a shiny finish. Tensile Strength This bolt is one half inch in diameter, has 13 threads per inch and is one inch long. Buy high tensile, stainless steel and structural heavy hex bolts from Boltport Fasteners and find information about inch and metric sized heavy hex bolt dimensions, standard, material, thread data and weight chart. 12. For example 3 lines identifies a grade 5 bolt, 5 lines is a grade 7 and 6 lines is a grade 8. ASTM, SAE and ISO Grade Markings for Steel Fasteners Download a complimentary PDF of our Fastener Markings chart. Video 1: Determining Bolt Grade and Head Markings Metric bolt grades and strength calculator was developed to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel. The chart below shows metric bolt conversions and DIN numbers for fasteners. , “X” ( on head of bolts and screws and on one end of studs and stud bolts). Class 1. Related Questions. MARYLAND METRICS - Your one-stop METRIC HARDWARE source offers over 1,200,000 METRIC sized items from over 900 suppliers, worldwide: Fasteners, Hand Tools, Cutting Tools, Measuring Tools, Hydraulic & Pneumatic Fittings & Tubing, Oil Seals, O-rings, Bearings, Mechanical Power Transmission Equipment, Workholding Components, Metal Shapes, Plumbing Fittings, Electrical - Lamps, Fuses, Conduit Grade 8 according to SAE J429 has a minimum ultimate tensile strength of 150 ksi, which is equivalent to 1040 MPa, which is the minimum ultimate tensile strength of 10. Proof Load (MPa), Min. 8. Lightning Bolt stocks an extremely large variety of grade 8 bolts and hex cap screws including both a domestic and import line. Self-Tapping (Sheet Metal) Screws. stronger than others. 6 through M36, inclusive, and suitable for use in automotive and related applications. What does the “grade” of a bolt mean? The specification number SAE J429 is the standard that covers these grades, and many other grades that are not as Grade 8 bolts are manufactured in different materials, thread types, lengths, coatings, and classes of fit, so it is critical that all those factors are taken into account when choosing the type of Grade 8 bolt is best. Hex Bolt Identification, Markings and Strength Chart. This article looks at the different strength grades for both inch and metric sizes. If the bolt head is marked with 8. -24 tpi x 1/2 in. e. Its properties are very similar to Grade A except that it has added the requirement of a specified maximum tensile strength. Its strength grades are indicated by the letter A plus three numerals stamped on the bolt head. CLASS. Medium Carbon Steel, 1/4 thru 1-1/2, 33,000, 36,000, 60,000. SAE standards list thread per inch as designates. The yield strength of the bolts is 940 and the tensile strength is 1040 MPa. Grade 5 Imperial Bolt  Aug 24, 2015 An example of an SAE thread is 9/16" x 20 TPI (pedal threads). 9 a - 325m type 1 or 2 a - 325m type metric english 3 (mm) (inches) hole diam (mm) english - astm grade specified a - 449 type 1 a - 354 grade bd Determining Bolt Grades & Understanding Head Markings The Nut and Bolt Solution Series. Grade 5. 5% of Chromium and is also referred to as Inox steel. Zinc plated alloy steel is most often available in Grade A, Grade C, Grade 2, Grade 5 and Grade 8. to look closely at for proper identification is the metric socket head cap screw. Because they are a large importer and distributor, they are able to make their prices more affordable for the average person. DANSMC BOLT TORQUE GUIDE Metric Bolts Maximum Torque, in foot-pounds, for clean, dry threads Check your Shop Manual! Bolt size Low Grade Grade 8. 9; Bolt class 12. 9 strength you would need to go to a typical socket head cap screw. The grades are two, five and eight. 8 (SAE 3) and All Grades less than Metric 8. Tensile strength is the maximum amount of axial stress that a material can take before breaking. Perfect reference sheet for your garage or workshop with conversion charts for both SAE to metric and metric to SAE. com board, a common question comes The difference between SAE and USCS — is that USCS (and Imperial) are systems of units (e. Accurate Automatic. The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication. Find SAE Standards Here: How to remove a broken bolt The following suggested tightening torques provide an excellent starting point for determining torque requirements. 9 or 12. Proper torque spec varies depending on the material, bolt grade or wether lubrication is used such as oil, wax, or anti-seize Always go to the manufacturer for proper torque specs if needed. The grade classes used on metric industrial grade screws and bolts before plating is. 9 It has grades 1, 2, 5, 8. Material, Nominal Size Range (mm), Mechanical Properties. Known for their high no markings. Class 8. 9 and 12. 9 bolts. After all, if it’s not broke why fix it? But if your project requires special bolts, or even if you’ve broken or damaged the bolt and need a replacement, you need to know how to read bolt grades. Or ASTM A563. What Does SAE Mean on Auto Tools? How to Tell  Oct 3, 2008 e. Grade B8M. These bolts are the common shiny silver zinc bolts that are used for general purposes. 5/16-18 x 1 is a 5/16 diameter bolt with 18 threads per inch and 1 inch long (coarse). Yield strength, or working load limit, is the amount of stress a material can withstand without permanent deformation. 9; Common Metric Steel Bolts; Identification Mark; Material; Tensile Strength While car and truck maintenance seems to lead the way on the transition from SAE to metric measurement standards for fasteners, and therefore the sockets used to tighten and loosen them, these same standards are used on virtually all bolt fasteners commonly distributed throughout the world. 9 bolt is a higher tensile bolt made from alloy steel that is quenched and tempered. This is done to allow a >Generally, any pointers to the "bolt science" are >appreciated. When nuts are machined from bar stock the nut must be additionally marked with the letter “B. All strength measurements are in ksi (kilo-pound per square inch). Many metric bolts denote the use of metric measurements with an "M" at the start of the bolt designation, such as "M9x1. Or Property Class. SAE Grade 5. Title: Metric Bolts Grades Author: www. 8 Grade 10. 5 thread pitch, measuring 20mm Carbon Steel Bolt Grade Markings In addition to the the indicated grade marking, all grades included in this table must be marked for manufacturer identification. Grade 5 bolts are a heat treated carbon bolt. 8, mm, mm, [Needs Calculation], View. So far, have replaced the metric bolt I pulled with the bolt I pulled, but one day I might find your info is very usefull. specifies metric fasteners. A325, A354, A490, A563; ASTM A193/194 Alloys; SAE J429/J995 Grades 5 & 8; Types 304 & 316 Stainless; Standard and Metric. 9), hardened steel washers, spring washers, etc. Metric Bolt’s online inventory allows you to place easy orders. 9 (socket products). ASM has a variety of technical resources available for you including Metric conversion information, fastener & screw specifications, SAE fastener standards & more. 8 bolts. What I was originally trying to get to was just a point about how to accurately "read" metric bolt grades since they are graded/marked differently that the SAE standards that I grew up with and also to compare the relative markings to those SAE grades that we are familiar with. 9 bolt is one of the highest grade of bolts produced. SAE J429 Grade 1, ASTM A307 Grade A are low carbon steel strength grades with essentially the same properties. Our metric grade 10. ” 3. U-Bolt-It is a leading distributor and manufacturer of high quality metric grade 10. Get the best deals on SAE and Metric Chrome Bolts, Nuts, Washers, and and Chrome Covers in numerous SAE and Metric sizes, and grades, for use in many   I was wondering if anyone knew what grade/class bolts should be used Automotive suspension fasteners don't correspond to SAE or metric  ISO 8765:2011 · Hexagon head bolts with metric fine pitch thread - Product grades A and B SAE AIR 5065A-2012 (SAE AIR5065A-2012) · Influence of Grain  The 12. Because there are so many different grades and fasteners all look about the same, medium carbon and alloy steel strength grades are marked for identification. For example, a Class 8. SAE) the main classifications are Grades 2, 5, 8, Allen heads, and Stainless. Hex head bolts & heavy hex bolts from Bayou City Bolt are in stock and ready to order. Fortunately, fastener manufacturers mark metric bolts differently than SAE bolts. Bolt, Grade 6. We provide various bolts such as hex cap screws, and hex tap bolts. 8 which actually meet that spec are roughly the equivalent of an SAE Grade 5, which is good but fairly ordinary. Head Marking, Class and. Metric grades 8. This SAE Standard covers the mechanical and material requirements for eight property classes of steel, externally threaded metric fasteners in sizes M1. 8 Class 10. In addition, manufacturers stamp most metric bolts with a number on the bolt head, such as 4. 8 . The two numbers used are individually defined by SAE J300 for single-grade oils. Hardened to increase its strength, it’s What others are saying Good Solid Advice About Hobbies That Anyone Can Use * Check this useful article by going to the link at the image. He is correct regarding the threads, one is inch-based, the other is metric, so you will need to choose one or the other. Even so, the Property Classes are roughly equivalent to the SAE Grade system. The numbering system is very simple; the number that appears before the decimal, when multiplied by 100, will provide the approximate minimum tensile strength of the bolt. 6 f - 568 class 8. k. We stock a full line of metric 8. They are A 12. U-Bolt-It is a leading distributor and manufacturer of high-quality metric grade 10. 2 SAE hex nuts. A grade five hex cap screw has more strength than a grade two, but less than a grade eight. 8, 9. 6. IFI-100 does not govern lock nuts above 1". Torque Values for Grades 2, 5, 8, and 9 Bolts - Coarse Thread SAE Gr. Tensile  Metric vs. These are 2, 5, and 8 for SAE, and 5. Jun 8, 2018 One common misconception about bolts is that a higher rated bolt is stronger, yet more brittle, and therefore lower grades should be used in  Nut Grade. The below SAE Grade 2 Bolt Torque Chart provides tension, torque, TPI information for the SAE Grade 2 bolts. 8 f - 588 class 8. View the ASTM And SAE specifications organized by material, grade marking, proof load and more. 8 - coarse USS thread. These bolts are designed, manufactured and tested to comply with the standards set by SAE J429 for proof load, yield strength, tensile strength, elongation, surface roughness and core hardness. ** Torque values Bolt Grade Markings and Strength Chart Mechanical Properties Head Marking Grade and Material Nominal Size Range (inch / mm) Proof Load (psi / MPa) Min. They see it as nothing but a piece of metal that holds things together. Nov 22, 2013 Metric bolts have their own rating system based on Mega Pascals (MPas). Bolts under this specification can conform to a headed bolt, straight rod or bent anchor bolt configuration. Heavy Hex Bolts are heavy profile hexagon head bolts with large width across flat and high head height. The same type of screw or bolt can be made in many different grades of material. Bolt  A nut is a type of fastener with a threaded hole. 9 JH 10. 9 Hex Flange Bolt Zinc Plate. The SAE steel grades system is a standard alloy numbering system for steel grades maintained by SAE International. Metric bolts marked 8. Lubrication added to a dry bolt will typically reduce the torque value 15-25%. Imperial bolt SAE no marking. These were made specifically for Allen wrenches, and can be used with other types of wrenches and tools as well. 5 x 20 This is a hex head bolt with a diameter of 10mm, a 1. Grade 2 – bolts manufactured from low or medium carbon steel. Shop our selection of SAE, Hex Bolts in the Hardware Department at The Home Depot. SAE Grade 8 150,000 psi Oct 3, 2008 Vegas Fastener Manufacturing – New Bolt Drawings. A corrosion resistant steel alloy. Besides using metric measurements, a metric bolt uses the distance between the threads rather than the thread pitch, used in Bolt Specific Standards Hexagon head bolts with metric fine pitch thread - Product grades A and B. NoGradeMark, SAE J429Grade 1, Bolts,Screws,Studs, Low or. Regularly boron steels like SAE 10B21 or SAE 15B25 are used to If you have ever looked a metric hex bolt you might notice the markings 8. 2 SAE A quick & easy guide for hex key conversions. ASTM A307Grades A&B, Low  Jun 15, 2016 Fastener manufacturers identify bolts and capscrews by type, length, major diameter, pitch (threads per inch), length of thread, class or fit,  Standard metric bolt mechanical properties, on-line. Bolt Torque Specs in Foot Pounds or (Inch Pounds) Tensile: 830MPa Tensile: 1040MPa Size/Thread Bolt Torque Specs in Foot Pounds or (Inch Pounds) Size/Thread Grade 5 Grade 8 Grade ASTM-A574 Class Tensile Torque Reference Chart Metric (ISO 898) - Inch (SAE J429) Note: These charts are provided as a Reference only. . 8, 5. SAE bolts will not thread perfectly into a metric nut or metric threaded hole. Yield Strength (MPa), Min. SAE bolts can be identified by their head markings. 4. The number to the left of the dot indicates the ultimate tensile strength in Mpa divided by 100. Metric bolts come with a “property class,” a two number system separated by  Grades and Specification 304 Stainless Steel Bolts supplier ASTM A320 Grade B8T, SAE J429 Grade 5, ASTM Hex Tap Bolts · 304 Stainless Steel Metric Bolts · 304  Tapertite marking. Bolt Grades I have been on a quite a few online email lists over the last 7 years or so, basically since they first came out. This grading system is used for nuts and bolts, not for steels. “inch”). 9, this is a metric bolt and the diameter, head, length. In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked for manufacturer identification. 9 Carriage Bolts Select Metric Bolts. Regular Series and Heavy. I have coffee cans full of SAE and smaller drawers full of metrics, but see no markings on my metrics (have every type SAE markings tho). 8 JH 8. Stainless Steel T-Bolt Clamps; BOLT Motorcycle Hardware. Untreated alloy steel fasteners are black. A metric bolt designated as ISO class 6. Lubricated Bolts and Reduced Torque - Lubrication effect on bolt tension and torque; Metric Bolts - Head and Wrench Sizes - ANSI/SO, DIN and JIS bolts; Metric Steel Bolts - Grades and Property Classes - Metric steel bolts, screws and studs - proof and tensile strength; Steel Bolts - ASTM Grades - ASTM steel bolts - proof and tensile strength Is something I never really thought about, but will (now you mentioned it). METRIC BOLT SUBSTITUTION – ASTM GRADE. Grade 8. Never replace a graded bolt with a lower grade or lower strength—do not substitute a stainless steel or silicon bronze bolt for a Grade 5 or 8 bolt, or a brass 1. We see bolts with a 9, or a 7, perhaps even a 10 stamped in the head. 8; Bolt class 8. 8 bolts, and work with the top manufacturers in the industry to provide the highest quality bolts for our clients. These numbers do not give us any insight as to the size or hardness of the bolt. 8 f - 568 class 10. Steel Bolts - Metric Grades ; Steel Bolts - SAE Grades ; For metric bolts strength is according ISO 898 Mechanical properties of fasteners made of carbon steel and alloy steel described by "property classes" with designations 4. 6, 4. S. This is the least expensive and most common. This is almost as high as they get and is about the equivalent to a grade 8 SAE or USS bolt. BOLT SIZES. SAE Grades. In the 1930's and 1940's, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels. 9 on a metric bolt indicates the hardness (or load, tensile strength, and hardness) of the bolt. Unfortunately, such markings are not reliable; there is a lot of hardware on the market which bears fraudulent grade markings, both in metric and Many metric automotive bolts are stamped with numbers creating a lot of confusion as to the actual grade (hardness) of the bolt. FASTENERS *The product images shown are for illustration purposes only and may not be an exact representation of the product. For bolting specifications that do not have a published proofload, it is usually calculated at 92% of minimum yield strength. Clamp loads for Grade C lock nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. These types of fasteners should be mechanically plated to avoid hydrogen embrittlement. 8 Hex Bolt M10 x 1. 9 for metric. Stainless steel 316 (A-4) Also known as A-4 stainless, 316 is a highly corrosion resistant grade of stainless steel. Bolt Grades & Head Markings: Fasteners 101. Fasteners (bolts or screws) are complex mechanically and metallurgically engineered hardware. The best-known grades for inch-sized steel bolts are those defined by the SAE, a sequence of grades from 0 to 8, on the basis of the metal from which the bolt is made and the manner of manufacture. They have a tensile strength of 60,000 PSI. 430 stainless stool. SAE bolt grades are identified by lines cast into the bolt head. The thread pitch is written between the diameter and length (both measured in millimetres) and is separated on each side by an X. The values shown in the chart are to be used as a mid-range guideline. They are made to metric, SAE and other standards, using different materials (identified by the grade, i. Property Class: 8. FastenerBlackBook. Stainless Steel Pro Shop Assortments -- USS/SAE & Metric. measurements, or to metric Some metric fasteners are available in different strength grades, which is referred to as "property class" or just "class. SAE grade head marks. 2 Clampload is calculated at 75% of proofload. Radial lines, such those used to mark SAE grades, are never used on metric bolts. Bolts nuts screws fasteners cutting inserts clips abrasives tools welding helicoils drills garage equipment lifting studs self drilling taps dies lock nuts somta drills power tools clamps hammer span Service Manual Supplement July 2016 Fastener Torque Specifications 4 SAE and Metric Fastener Torque Specifications SAE Plain and Zinc Plated Hex and Socket Head Cap Well - I guess I opened a can of worms here. US Bolts: Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties ; Proof Load (psi) Min. For critical high-tensile-strength applications, low-grade bolts may fail, resulting in damage or injury. 8 Metric 10. 8 grade bolt the first figure signifies that the Tensile Strength is at least 800MPa. Stainless steel 18-8 (A-2) Also known as A-2 stainless, 18-8 is the most common grade of stainless steel for general use. This specification covers anchor bolts that are designed for anchoring structural supports to concrete foundations. Each has specific strengths. On SAE-standard bolts, a distinctive pattern of marking is impressed on the heads to allow inspection and validation of the strength of the bolt. Another widely-used system of bolt strength grades comes from ASTM International, formerly the American Society for Testing and Materials. SAE and METRIC Bolt Gauges Check a Thread Nut Fastener Size - Hardware Nut And Bolt Sets - Amazon. Higher grade numbers almost always mean increased strength (an exception is that some 10. 9, mm, mm, [Needs Calculation], View. 9) To meet the 12. ASTM A307 Grade B is a special low carbon steel grade of bolt used in piping and flange work. Q&T= quenched and Metric hex bolts; Hex bolts. 6, 5. BOLTS Hex Bolts/Cap Screws Select Grade All Grades Grade 5 USS Coarse Thread Grade 8 USS Coarse Thread Grade 8 SAE Fine Thread Stainless Steel 18-8 Metric 8. 9 Grade 8 JH Grade 5 JH Class 8 8 Class 10 10 Grade 5 Grade 8 Metric fastener Strength Grades/Class . JIS (Japanese) Metric Hex Head - Class 10. Although grade nine is also sold, and is assumed to be around 20 percent stronger than grade eight, it isn't an SAE grade and doesn't have standard chemical and physical properties the way the other grades do. U-Bolt-It supplies high quality metric bolts to all industries, including metric grade 8. 6; Bolt class 5. SAE Grade 2, Metric 5. Example: Class 8. These bolts are designed, manufactured and tested to comply with the standards set by SAE J429 for proof load, yield strength, tensile strength, elongation, surface roughness and Identifying the pitch of a bolt is a little more tricky. Yield Strength (psi) Min. The metric system designates strength capabilities via property classes rather than grades. Special markings on screw heads and nuts identify the fastener's grade. Grades. 3 f - 568 class 9. metric bolt grades and sae

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