Grade 2 Bolt Strength. Spanning from Grade 2 bolts for lighter duties to Grade 12 bol

Spanning from Grade 2 bolts for lighter duties to Grade 12 bolts engineered for the extreme, the array of bolt grades available ensures an ideal match for every project. Learn tensile strength, markings, and applications. Learn to choose the right fastener, avoid costly mistakes, and build with confidence. May 12, 2025 · Mechanical-engineering document from California Polytechnic State University, Pomona, 2 pages, Bolt Depot - Bolt Grade Markings and Strength Chart Page 1 of 2 Email: info@boltdepot. The second number is = 1/100. Same and Next Day Delivery. 6630 5 0. 2, 8, and 8. Grade 5 bolts for example must have a minimum tensile strength of 105,000 psi. Grade 8 hex flange bolts3/8 in. 6, 4. 0000 1-8 1. Depending on the application they are used for, the Grade 2 bolts can be partially or completely threaded. Except for the very lowest grades metric nuts and bolts all carry identification markings which indicate their strength. Feb 25, 2025 · From a simple Grade 2 bolt holding up your mailbox to a high-strength 12. -11 coarse screw thread; measure 2-1/2 in. SAE steel bolts - grades ranging grade 1 to 8. 1-8 1. Available in a 2-pack. For example, a Grade 8 bolt has a higher tensile strength than a Grade 2 bolt, making it suitable for more demanding applications. (the ratio of the Proof (or Yield ) stress and the Tensile strength expressed as a percentage = 100. Dec 14, 2021 · Have any questions? Talk with us directly using LiveChat. Within this standard, bolt grades include Grades 1, 2, 5, 5. and n equals thread per inch. Crafted from premium alloy steel and enhanced with a vibrant yellow zinc coating, these fasteners guarantee exceptional durability and corrosion resistance. Proof Load Tensile Strength for Grade 2, 5 & 8 Coarse Thread Series – UNRC Nominal Diameter of Products & Threads per inch 1/4 – 20 5/16 – 18 3/8 – 16 7/16 – 14 1/2 – 13 9/16 – 12 5/8 – 11 3/4 – 10 7/8 – 9 1 - 8 1-1/8 - 7 1-1/4 – 7 1-3/8 – 6 1-1/2 – 6 Grade 2 ASTM, SAE and ISO Grade Markings for Steel Fasteners Download a complimentary PDF of our Fastener Markings chart. 9. Nov 19, 2014 · Bolt grades are easy to determine and important to recognize for the right application. -16 coarse screw thread; measure 1-1/4 in. Feb 15, 2019 · You can usually figure out the grade, or strength, of a bolt by looking at the markings on its head. 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. Jan 27, 2023 · What is Bolt Grading? Bolt grading is a classification system that defines a bolt’s mechanical properties, particularly its strength and hardness. These grades ensure that bolts meet the specific demands of different applications. Refer to the charts to find the ideal tightening torque. Material and Treatment - How the material and treatment of bolts affect their strength. Jul 19, 2024 · Tensile Strength: The maximum load a bolt can handle without breaking. Mar 3, 2022 · Bolt Grades Explained Bolt grades are defined by their specific material, as well as the strength of that material. Make informed decisions and ensure the success of your mechanical engineering projects. 7035 stud bolts/ threaded rod/ washers specification Introduction: Bolts are the unsung heroes of construction, engineering, and steel fabrication. Learn the differences between Grade 5, Grade 8, and Grade 9 bolts - strength specs, markings, applications, and how to choose right. Check out our list and learn how to identify common bolt grades. Expert insights inside! The document provides information on bolt grade markings and strength charts for US and metric bolts. Healey6 Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners. We will discuss their properties, such as higher tensile strength and where they fit within the hierarchy of bolt grades. Available in a single pack. Find the strength and material of different bolt grades in US and metric sizes. Grade 2 bolts may not have the impressive strength of their Grade 5 or Grade 8 counterparts, but they serve an essential role in countless industries and applications. Bolt strength can be divided into ordinary grade and high strength grade. For fastening bolts used in different products and applications, bolts of different grades are required to suit the uses. On the head of each bolt there are two numbers which are separated by a decimal point. 6630 8 0. 0000 0. Includes printable chart. The grade is typically marked on the bolt head and corresponds to specific material compositions and heat treatments. 9 and 12. All heads of bolts, have markings and indicators to specify the grade of the bolt. The plain finish offers basic corrosion resistance suitable for indoor or protected environments, while the full thread along the entire length ensures maximum engagement and ease of installation. Grade 2 represents commercially pure titanium with excellent corrosion resistance, while Grade 5 (Ti-6Al-4V) titanium alloy bolts offer superior strength through aluminum and vanadium alloying. com Toll Free: 1-866-337-9888 Bolt Grade Markings and Strength Chart • - intafast Industrial Fastenings Metric steel bolts, screws and studs - proof and tensile strength. SAE J429 SAE J429 covers the mechanical and material requirements for inch series fasteners used in automotive and related industries in sizes to 1-1/2” inclusive. With various grades and types available, each suited to specific tasks, understanding their characteristics is critical RECOMMENDED TORQUE VALUES FOR SAE GRADE 2, GRADE 5 AND GRADE 8 CAP SCREWS & BOLTS Mechanical Properties Hardness Rockwell Grade Marking Material & Treatment Nominal Size (in. 2 - proof and tensile strength. Grade 2 bolts are cheap but not very strong, grade 8 bolts are the strongest and most expensive, and grade 5 bolts are the most common. We would like to show you a description here but the site won’t allow us. Hillman Flange Bolts are ideal for use in any application where high-strength fasteners with a protective flange are desired. . in lengthThis hex flange bolt is part of the Hillman Deep Drawer program Grade 5 bolts are known for their improved strength compared to Grade 2. Their strength, durability, and adaptability make them integral to the stability and success of countless projects. 6-12. Jul 2025 Bolt Grade Markings and Strength Chart Apr 19, 2022 · A grade 2 bolt is distinguished through its complete lack of markings and will usually have a tensile strength of between 60,000 and 74,000 psi. Grade 2 bolts are the weakest while grade 8 are the strongest. Nov 14, 2025 · Complete guide to bolt grades. Engineered for everyday use, this hex tap bolt combines basic strength with a straightforward, uncoated finish for budget-conscious projects. 9, or stainless steel, this guide covers it all. Dec 11, 2025 · The chart below organizes bolt grades, their head identification marks, and strength values because knowing how to read them helps you choose hardware that’s right for your job. Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. What are Bolt Grades Bolt grades are a standardized way of categorizing bolts based on their mechanical properties, such as tensile strength, yield strength, and hardness. 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. There exists an often quoted myth, that Grade 5 bolts are better in shear than Grade 8 since they will bend before breaking. 8 are used—plus A2-70 and A4-80 stainless. 1 day ago · When selecting between Grade 2 and Grade 5 titanium fasteners, understanding their fundamental differences becomes crucial for optimal performance. Grade 2 bolts are made of low or medium carbon steel and have a minimum tensile strength of 60,000 psi. Though formally integrated into ASTM F3125/F3125M in 2016, the “A325” designation remains the industry’s go-to reference for heavy hex structural bolts, reflecting its enduring Fastener grades and property class is a designation system which defines the strength of a bolt or nut. Yield Best price and custom threads of Titanium Grade 2 Fasteners, Buy CP Ti gr 2 Hex Bolts and Nuts as per ASTM B348 UNS R50400. Nov 20, 2025 · Bolt torque specifications chart for Grade 2, 5, and 8 bolts. 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. May 15, 2024 · Bolts are crafted from various steel grades. CNRL bolt grade markings, strength chart, and metric bolt size chart guide distributors in proper fastener selection. Discover a reliable fastening solution with our Grade 2 Plain Finish Hex Tap Bolt (Full Thread) 3/8-16 x 3 3/4. These charts helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and hardness of common grade bolts. If strength is important, ensure that both the grade and manufacturer identification markings are present. May 20, 2025 · Discover how bolt grades impact your projects. Nov 12, 2025 · ASTM A325 bolts are iconic high-strength fasteners widely used in structural steel connections, renowned for their reliability, standardized performance, and versatility in construction and engineering projects. where D equals nominal diameter in in. Bolt Grade Markings and Strength Chart Email: info@boltdepot. com Toll Free: 1-866-337-9888 Bolt Grade Markings and Strength Chart Head Marking Nominal Size Range Grade and Material Mechanical Properties Proof Load (psi) Min. 6057 2 0. Interchangeability of Grade 2 and A307A Fasteners In general, since the minimum strength requirement of a Grade 2 is greater than that of an A307A, a Grade 2 can be successfully utilized in applications where an A307A is specified, as approved by the “Engineer of Record”. This Grade 5 bolt, measuring 1/2-13 x 3-1/2 inches, is engineered specifically for Aviation Ground Support Equipment applications. Engineered from Grade 2 carbon steel, this bolt provides reliable strength at a cost-effective price point. 6630 9 Load Calculator Load Calculator Quickly find the tensile, yield, proof, and estimated shear strengths of your bolts. Always pay close attention to the head of a bolt to ensure it is the right strength bolt. This document provides SAE bolt torque charts for grades 2, 5, and 8 bolts. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. Understand bolt grades from SAE 2 to ISO 12. These bolts are made from low-carbon steel, which provides adequate strength and ductility for most common fastening Jan 7, 2017 · Grade 8 bolts exhibit greater tensile, yield, and shear strength as well as greater fatigue resistance and, just as important, are capable of greater torque specs and therefore much greater pre-load and clamping strength. Their ductility, affordability, corrosion resistance, and ease of use make them a top choice for light-duty, non-critical connections. 8, 10. Discover the differences between US and metric grades, their applications, and how to choose the right fasteners for your project. Tensile strength is the amount of pull the bolt can withstand before breaking. Typically, a bolt grade spec will call out the material (or give a couple of material options), then list the strength requirements for that material. 6057 9 0. Choose from our selection of grade 2 bolts in a wide range of styles and sizes. Contact American Fastener with any questions or for a custom quote. 0000 1-12 1. Most people think of a bolt’s strength in terms of when it breaks. It is crucial to use the right kind of bolt per application. ” Quick Tip: For instructions on how to calculate the strength for your bolt, see Calculating Yield and Tensile Strength. English bolts are categorized by grade and metric by strength class. SAE J429 covers a number of other grades and grade variations not covered in this summary, including 4, 5. Property classes for steel bolts, screws and studs The code is comprised of two numbers separated by a dot. Yield Strength: The load at which a bolt begins to deform plastically. After this point, the bolt will not return to its original shape. Here, we'll offer more details on different grades of bolts and their applications to help you find the best-suited grade for your projects. Dec 12, 2023 · Key Points Bolt Grades - Explanation of different bolt grades and their significance in strength ratings. Includes proper tightening specs, torque values, and installation tips to prevent bolt failure. Grade 8 bolts must meet a minimum of 150,000 psi tensile strength. Torque values for various grades and diameters of fasteners. Mar 28, 2022 · The strength grade of the bolt is divided according to the hardness, force, and yield of bolt raw materials. Grade 8 has superior clamping force and reliability make them the preferred choice for securing essential components where maximum strength is essential. Bolts and screws also bear a mark to identify the manufacturer. 6057 8 0. High-tensile bolt grades refer to bolts designed to withstand heavy loads and extreme conditions. Dec 18, 2024 · Learn about the different grades of bolts, including Grade 2, Grade 5, Grade 8, and high-strength alloy bolts. 9, and stainless steel bolts. For metric fasteners, property classes are designated by numbers where increasing numbers generally represent increasing tensile strengths. Manufacturer and suppliers of titanium Grade 2 fasteners in UAE, wide range of GR2 hex bolts/ studs/ nuts as per ASTM B348. ) Proof Yield Tensile Elong % Load Strength Strength Min Min (ksi) Min (ksi) Min (ksi) TORQUES LISTED ARE SUGGESTED VALUES FOR PARTS THAT CARRY RESIDUAL OILS FROM Sep 28, 2024 · Learn about the different grades of bolts and nuts, including Grade 2, Grade 5, Grade 8, stainless steel 304, 316, and alloy steel grades. It's always a good practice to use a torque wrench when tightening bolts. Jun 21, 2023 · The tensile strength of bolts varies depending on their grade or material composition. It is used to select the correct size and type of bolt for specific applications, ensuring that the joint will be strong enough to handle any load it may incur. 9 vs 10. Discover our ultimate guide to bolt grades and markings. Nov 24, 2023 · From SAE to ASTM to ISO, learn all about bolt grades, tensile strengths, and suitable applications. Sep 18, 2024 · Learn the essentials of bolt and nut grades, including SAE, ISO, and ASTM standards. All strength measurements are in ksi (kilo-pound per square inch). Sep 10, 2015 · For example, an SAE grade 5 hex cap screw has a specified minimum tensile strength of 120,000 psi. Aug 16, 2024 · Grade 8 bolts: Known for their high shear strength and tensile strength, Grade 8 bolts are commonly used in heavy machinery, automotive applications, and structural connections. This Grade 5 hex tap bolt features a fully threaded body and a zinc finish that resists corrosion in demanding environments. Check CP Ti gr 2 Studs and threaded rod weight and sizes. Check DIN 3. Conversely, because of the lower minimum strength specified for an A307A, caution should be exercised when substituting For example, a Grade 2 bolt used in a high-load machine application could shear or stretch permanently, while a Grade 8 bolt offers greater tensile strength and hardness. Each grade of bolt is tailored to withstand a defined maximum stress, delineated by tensile strength—how much pull […] Stamping of F1554 and A307 Grade C bolts is a supplemental requirement while color coding is required. A guide to selecting the perfect bolt for your project. 9 keeping an engine together, each marking tells you exactly what that fastener can handle. 8, 5. The first number is the tensile strength of the bolt material (N 2 )/100. SAE bolt grades indicate the strength of the bolt. Grades of Bolts - Bolt Grade Marking Chart, p2 Grades of Bolts - Bolt Grade Marking Chart, p3 Tensile Strength: The resistance of a material to breaking under tension Yield Strength: The stress at which a speci c amount of deformation is produced Proof Load: An axial tensile load which the product must stand without evidence of any Sep 4, 2024 · Learn how to select the correct bolt grade for your projects with a breakdown of Grades 2, 5, and 8. 8, 8. Aug 2, 2023 · How strong really is a Grade 8 bolt? Our experts discuss Grade 8 bolt strength, head markings, applications, and more in this article. Bolt grades are typically determined by two main standards: Jun 18, 2019 · SAE Bolt Strength SAE Bolt Tensile Strength (Working Load) Safe Tensile Load at 6,000 PSI Load Safe Shear Strength at 7,500 PSI Load NF Thread Grade 2 Iron Bolt A Grade 2 bolt is a specific type of fastener that belongs to the ASTM A307 standard, which outlines the specifications for low-carbon steel bolts, studs, and threaded rods. Higher grades are made of stronger alloy steels and are Bolt Grades - Head Marking and Rod End Reference Guide Bolts and Rod Ends Specification Data Nov 28, 2023 · Gain a solid understanding of bolt weight and strength grades with our comprehensive table. It explains that higher grades indicate stronger bolts and lists the ideal tightening torques to maximize clamping force without breaking the bolts. 1, and 8. 6057 5 0. Higher grades have increased minimum tensile strengths and proof loads. 8, 9. Proof Loads and tensile strengths are computed by multiplying the proof load stresses and tensile strengths stresses by the stress area of the thread. 9 vs 8. Upgrade your aviation ground support with Sage Parts' Grade 5 1/2" x 3" bolt, engineered for strength, corrosion resistance, and secure fastening. 9 and choose the right strength level for your project with Jingle fasteners. Whether you need Grade 8, Class 12. Learn about the different types of bolts and how to choose the right one for your application. Grade 2 - Low Carbon Steel - up to 3/4" proof load 55000 psi, minimum tensile strength 74000 psi - 3/4" - 1/1/2" proof load 33000 psi, minimum tensile strength 66000 psi Information on the strength requirements of the different grades of construction fasteners. Ask now. These bolts are typically made from alloy steels and undergo specific heat treatments and manufacturing processes to enhance their strength. Discover their applications and how to choose the right one for your project. Therefore, for design purposes, its shear strength could be reasonably assumed to be 70,000 psi. in lengthThis hex flange bolt is part of the Hillman Deep Drawer program Dec 10, 2022 · A bolt strength chart is an important tool for calculating the tension or clamp force that a bolted joint can withstand. 2, with nominal sizes ranging from ¼ to 1 ½ inches, depending on the specific bolt grade. Discover their material properties, applications, and how to select the right bolt for your project. Dec 28, 2023 · 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. Grade 8 hex flange bolts5/8 in. Grade 2 bolts are primarily used for general-purpose applications where moderate strength is required. Crafted to meet rigorous industry standards, it offers reliable strength and durability essential for securing critical components in demanding environments. Caution By using this Load Calculator, you agree to the following terms and conditions: The following tensile, yield, proof, and estimated shear strengths are based on the consensus industry standard where applicable. To find the actual weight a bolt can withstand you would have to multiply by the area of the cross section of the bolt. However, selecting the right bolt is not as simple as it seems. 6630 2 0. Jul 21, 2017 · A grade 2 bolt made of low-carbon steel has a tensile strength of 64,000 pounds per square inch or less. It lists various bolt grades for different materials like steel, stainless steel, and aluminum along with their nominal size range, proof load, minimum yield strength and minimum tensile strength. 1, 5. Aug 21, 2025 · Complete fastener grades guide covering SAE Grade 2-9, metric 4. Nov 5, 2019 · Learn what metric bolt grades mean, how to read head markings, and where 12. This helps to determine the maximum amount of stress that the bolt can handle. Nov 21, 2023 · Explore essential bolt grades with our comprehensive chart for builders, detailing US and metric strengths, and easy PDF downloads. 2. Comparison of Shear Strengths of Grade 2, 5 and 8 Screws The industry standard for determining shear strengths of fasteners is to take 60% of the minimum Ultimate Tensile Strength of the fastener for single shear joints and 120% for double shear joints. Below is a basic summary of the most common grades. 2, 8. Grade markings for steel bolts and screws specify their physical properties including tensile strength and proof load. Description Grade 5 Zinc Plated Hex Tap Bolt (Full Thread) 3/8-16x1 1/2 — a sturdy steel fastener engineered for reliable strength in mechanical assemblies. 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.

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