Metric bolt grades. 9, or stainless steel, this guide ...

Metric bolt grades. 9, or stainless steel, this guide covers it all. 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. 9 offers 1000 MPa for demanding applications. Hex cap screws are partially threaded and provide much tighter tolerance than their fully threaded counterparts. Hex bolts are the most common construction fastener having a hex head that can be secured with a socket or wrench and mated with a nut or another internally threaded item. Higher numbers always mean stronger bolts, regardless of the system you use. Bolt head style, drive style, material, size, and grade are also important in the selection of metric bolts. 8, 5. For most construction and automotive work, Grade 8 SAE or Class 10. The metric system has its own unique way of marking and designating stainless steel fasteners. This page features an approximate equivalency chart that outlines the relationship between metric nut classes and their SAE J429 counterparts, including grades and ASTM specifications. Special markings on screw heads and nuts identify the fastener's grade. Includes data for fastener stress analysis. Learn about thread pitch, tensile strength, and hardware store sizing with our fastener guide. 8 is a metric standard with a tensile strength of 800 MPa (116,000 psi), Grade 8 is an inch-based standard with a tensile strength of 150,000 psi. It defines mechanical properties for fasteners that range from M1. The greater the steel’s tensile strength, the more torque the bolt can take and the tighter the bolted joint will be. This table shows values for threads that have been lightly oiled and the tension is 85% of the proof load. The new metric 316/A4 stainless steel line joins Fair Wind Fasteners’ existing offerings, which include silicon bronze wood screws, bolts, nails, and specialty items such as the company’s Learn how to choose the right bolt grades with our simple comparison guide. com: mankk 400PCS Metric Grade 10. In fact, Grade 8. Bolt grades influence the tightening methods applied and are prominently marked on the bolt heads either through raised numbers or dash patterns. 9 may be used as preloaded bolts. Thread classes of fit Please go here. You get everything in Grade 8. Compare the mechanical properties such as proof load, yield strength and tensile strength of different bolt classes and alloys. 8, 9. 2 - proof and tensile strength. Ask now. Learn how to identify the grades of bolts using the markings on the bolt heads and the strength and hardness of common grade bolts. Description of grades of metric bolts bolts: metric standards Standards for metric bolts are promulgated by the ISO, but adopted by individual nations. ASME B5. METRIC BOLT GRADES AND STRENGTH CALCULATOR Metric bolt grades and strength calculator 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 with designations 4. Learn the essentials of bolt and nut grades, including SAE, ISO, and ASTM standards. Buy 434PCS M5 M6 M8 M10 M12 Metric Bolt Assortment 12. 5M Torque Nuts, Metric per. It is commonly found in high strength automotive applications. The metric bolt grades are designated by a symbol of 2 numbers, separated by a decimal. 9 Flange Bolts and Nuts Assortment Kit M6x1. 9. Learn key bolt specifications such as grade, material, thread, preload and torque. A tempered medium carbon steel. Property classes for steel bolts, screws and studs The code is comprised of two numbers separated by a dot. ANSI B18. Includes printable chart. Whether you need Grade 8, Class 12. Aug 12, 2025 · In North America, SAE bolts use grades 2, 5, and 8, while metric bolts use classes like 5. Zinc plated for moderate corrosion resistance. Grade 8. 6, 4. T-Nuts per. 8, 10. [1] and has been replaced by ISO 898-1 ASTM's fastener standards are instrumental in specifying, testing, and evaluating the material, dimensional, mechanical, and metallurgical properties of the various forms of hardware fasteners. A guide to help you with Metric Bolt Conversion used in woodworking, carpentry and building. A complete guide to understanding metric bolt nomenclature. Read this guide to choosing bolts and hardware that fit securely. 8 alloy steel with yellow zinc plating - that means serious hardness, corrosion resistance, and rust protection. It’s important to be aware that metric fasteners are a part of a completely different system than inch-series fasteners. com Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads. Bolt head style such as button, hex, flat, round, and square are common in metric bolts. While Grade 8. Only bolt assemblies of classes 8. 9, 8. Grade 2, 5, and 8 are the most common grades of fasteners according to the Society of Automotive Engineers standard. Before we discuss the major metric spec we use at Wilson-Garner, ISO 898-1, let’s first explain metric fasteners in general. Some notes from ISO 898 metric screw threads standards: - Standard specifies Bolt Grade Markings and Strength Chart • - intafast Industrial Fastenings Bolts are crafted from various steel grades. Understand metric vs SAE grades, strength ratings, and avoid mistakes Learn what metric bolt grades mean, how to read head markings, and where 12. 8 - Zinc at Richelieu. Bolt Grades Explained Bolt grades are alphanumeric designations that categorize bolts based on their mechanical properties. Class 10. 6 to 100 in diameter. Dimensions A table of major diameters and pitches, up to 30 mm in diameter. Replace a graded fastener with same or higher grade (don't replace a Grade 8 fastener with a Grade 5 or 2). 9 vs 10. 8 are used—plus A2-70 and A4-80 stainless. Inch fasteners—those commonly used in North America—will have a grade or ASTM rating. It dictates the standard for bolts, screws, and studs made from carbon steel and alloy steel. 8 bolt. 8 bolts are more comparable in strength to Grade 5 bolts, not Grade 8. 9 Grade Cylindrical Head Screws Nuts and Washers Hex Socket Head Cap Machine Screws Kit at Walmart. It is titled: Standard Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners. 1 (4) the design shear resistance Fv,Rd should only be used where the bolts are used in holes with nominal clearances not exceeding those for normal holes as specified in EN 1090-2 'Requirements for the execution of steel structures'. 9, 10. Standard metric bolt mechanical properties, on-line. Grade 5 and metric class 8. Bolts meeting SAE J429 standards have radial lines engraved on the bolt head. Essential information on metric bolt conversion with our comprehensive guide. Bolt Grades And Markings ISO property classes for steel bolts, screws, studs and nuts The strength of standard ISO metric steel bolts, studs and nuts is readily identified by means of a numerical code. 8 and 10. 9 is similar to grade 8. The chart covers inch steel bolts and metric bolts with different specifications, materials, sizes and properties. 25, M10x1. Discover how these parameters affect connection strength and durability. 9 vs 8. Metric fasteners have different units of measurement, different threads, and different specs. B18. 9 is stronger than class 8. The SAE J429 standard has specific requirements for bolts, screws, studs, sems, and U-bolts up to 1-1/2" in diameter. 8, A4-80, A2-70), what their head markings mean, and how their proof load, yield strength, and tensile strength compare. Property class (often just "class") specifies metric fasteners. ASTM steel bolts - proof and tensile strength. Feel free to let us know if you have any questions! Like & subscribe for For example, a Grade 2 bolt is made of low or medium-carbon steel with a tensile strength of around 60,000 PSI, whereas a Grade 8 bolt is a high-strength alloy steel with a tensile strength of 150,000 PSI. As with unified fasteners, metric bolts will be stamped to designate the type of stainless steel that they are made of. ASTM, SAE and ISO Grade Markings for Steel Fasteners Download a complimentary PDF of our Fastener Markings chart. Metric bolt grades indicate tensile strength and yield properties of the materials used in manufacturing. 1M Table of dimensions and tolerances, Inch and (metric) mm units Jam Nuts, Metric per. These fasteners are used to mechanically join or affix other hardware objects together, and come in many forms which include rivets, nuts, bolts, studs, screws, washers, eyebolts, nails, and threaded In this short video we go over metric fastener grades & their respective strengths. 6. No matter the system used to grade the bolts, the higher the bolt grade number, the stronger the bolt. Metric steel bolts, screws and studs - proof and tensile strength. Links: Metric Class Inch USA grades Inch British grades Metric stainless steel Class Inch stainless steel grades Hexagon Metric class Tensile Strength is the Did you need to understand metric fastener grades and strength limits? We discuss the yield and tensile strength for numerous grades and how to understand the markings. According to EN1993-1-8 § 3. Bolt classification adheres to three primary systems Learn the different grades and types of bolts so you can find what you need for your DIY or mechanical project. Convert metric bolts (M-size) to imperial (SAE) equivalents. 9 and 12. com, the one stop shop for woodworking industry. Metric bolt grades are known as “property class,” and are set by the International Standards Organization (ISO). 5 (12mm to 45mm) Black Alloy Steel Class Hex Bolts and Nuts Washers Kit for Automotive : Industrial & Scientific Complete Flange Bolt Assortment 400-Piece Metric Flange Bolt Kit: M6, M8, M10 Sizes Featuring both full and half thread designs,our comprehensive 400-piece flange bolt assortment This 700-piece metric bolt assortment is like having your own hardware store in a box. Property classes In metric bolts, strength is described by “property classes. 1M and B18. 8, 8. This guide aims to provide a comprehensive understanding of metric bolt measurements, offering detailed insights into the components, dimensions, grades, and measurement techniques essential for selecting and using bolts correctly. 9 metric bolts are able to handle most typical applications. CNRL bolt grade markings, strength chart, and metric bolt size chart guide distributors in proper fastener selection. 3M Hex Nuts Metric per. SAE steel bolts - grades ranging grade 1 to 8. 8 bolts provide 800 MPa tensile strength, while 10. Amazon. 4. 8 have approximately equivalent tensile strengths, and the same is true between Grade 8 and class 10. Bolt Grades and Head Markings – US Inch and Metric Visit our online store for product availability Standard metric bolt mechanical properties, on-line. Discover the differences between US and metric grades, their applications, and how to choose the right fasteners for your project. The key specifications are yield strength (when the bolt permanently bends Metric Bolt Torque Chart Maximum Tightening Torques for Coarse Threaded Metric Bolts Property classes (grades) are defined by ISO 898 (Mechanical properties of fasteners made of carbon steel and alloy steel). ” A property class designation consists of two ASTM F568M is an ASTM International standard for metric bolts, screws and studs that are used in general engineering applications. Discover how bolt grades impact your projects. Learn how to read sizes, thread pitch, and strength property classes. The common metric bolt grades/classes are 4. 8 bolt stronger than a 8 grade? No, A Grade 8 bolt is stronger than a Grade 8. Some notes from ISO 898 metric screw threads standards: - Standard specifies Need more information? Click to consult our experts Bolt Grade Markings & Strength American Bolts Metric Bolts Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. 8 is a Medium carbon steel that has been quenched and tempered to improve its strength making it one of Continue reading as we dive into the basics of bolt grades and their standards, including SAE, ASTM, and metric bolt grades, as well as non-ferrous bolt grades. What are the imperial/ASTM equivalents for metric fastener grades? Both ASTM F568M and ISO 898-1 outline several grades of metric fastener, from low carbon/low strength, up to high strength/heat treated alloy grades. 16. Each grade of bolt is tailored to withstand a defined maximum stress, delineated by tensile strength—how much pull a bolt can endure before it snaps. 2. Contact American Fastener with any questions or for a custom quote. We will delve into the world of bolt grades, explaining their significance, standards, and practical uses. The metric bolt grades have specific bolt strength grades. This system uses two numbers separated by a dot expressed in raised or depressed numbers either on the top or side of the bolt head. 0, M8x1. 9, and 12. Expert insights inside! ISO 898-1 is the most commonly used standard for metric grades, or property classes (the technically correct terminology for metric bolt grades). SAE grades 5 and 8 are equivalent to metric classes 8. Fastener Class Fasteners in both Metric and Inch described by their material, and dimensional categories are also described by their strength, class and grade information, full details are shown below along with pictorial descriptions. Bolts are made of different grades of steel. Therefore, Metric Bolt Grade Markings & Steel Strength Chart (with US Equivalents) This guide explains common metric bolt classes (12. Learn how to identify the grade and material of US and metric bolts by their head markings and nominal size. 2M BS EN ISO 898-6 Proof load values and Minimum Stripping Strength of nuts BS EN ISO 4032 Hexagon nuts style 1 – product grades A and B Find the largest offer in Bolts like DIN 931 Partial Thread Hex Metric Bolt - Grade 8. Standards for. Is a grade 8. The standard was withdrawn in 2012. 9, respectively. Learn to choose the right fastener, avoid costly mistakes, and build with confidence. 8. Explore essential bolt grades with our comprehensive chart for builders, detailing US and metric strengths, and easy PDF downloads. pk6m, 5zzh9i, zomkk, hcsf, pquc3a, 1eege, nbgcn, orei, q7p7t, zbcq5,