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. Please note the bolt heads may also include the manufacturer's identification stamp, especially with high strength bolts.

Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing. Yield Strength: The maximum load at which a material exhibits a …

Mate with lead screws to move components in a straight line. Choose from our selection of grade 2 bolts in a wide range of styles and sizes. In stock and ready to ship.

The grade of bolts is stamped on a bolt head as a marking that indicates the type of material the bolt is made of and its strength rating. For instance, Grade 2 bolts are made of low-carbon steel and are the most common type of bolt used in construction.

Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. 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.

2022年4月19日 · 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. Depending on the …

2025年1月20日 · Bolts are essential fasteners in construction, machinery, and various engineering fields. The reliability and performance of bolts depend heavily on their grade, which indicates their material properties, strength, and intended applications. Understanding bolt grades is vital to ensure safety and performance in any project. This article explores the concept of …

2023年9月11日 · 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.

2023年9月7日 · There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Each grade has a specific bolt strength. No matter the system used, the higher number means the stronger the bolt.

SAE J429 Grade 2 ASTM A307 Grade A dely used for general purpose bolting. Our Grade 2 and A307A Fasteners are 100% ade in the U.S.A. from American Steel. They are formed on precision high speed cold formers, utilizing in-process quality systems and have full traceability from aw material to each container we ship. Chemical and physical certifica