How Are Hex Bolts Classified?

Hex bolts are classified based on their size, material, thread pitch, and other characteristics. Here are the main ways in which hex bolts are classified:

Size: Hex bolts are measured by their diameter, which is typically expressed in inches or millimeters. The length of the bolt is also important, and is measured from the bottom of the head to the end of the bolt.

Material: Hex bolts can be made from a variety of materials, including steel, stainless steel, brass, and titanium. The choice of material depends on the intended application and the environmental conditions in which the bolt will be used.

Grade: Hex bolts are graded based on their strength and hardness. The most common grades are 2, 5, and 8, with grade 8 being the strongest and hardest.

Thread pitch: The thread pitch of a hex bolt refers to the distance between the threads. Coarse thread bolts have a larger pitch and are typically used in applications where quick assembly and disassembly is required, while fine thread bolts have a smaller pitch and are used in applications where a tighter fit is required.

Finish: Hex bolts can be finished in a variety of ways, including plain, zinc-plated, and galvanized. The finish is chosen based on the intended application and the environmental conditions in which the bolt will be used.

Overall, the classification of hex bolts is important for ensuring that the right bolt is chosen for a specific application, as different bolts will have different characteristics that make them more suitable for certain types of projects.