Head: The head of a hex bolt has a six-sided shape, known as a hexagon or hex head. It is designed to be tightened or loosened using a wrench or socket tool that matches the hexagonal shape. The hex head provides a secure grip and allows for easy application of torque during installation or removal. Shank: The shank refers to the straight, cylindrical portion of the bolt between the head and the threaded portion. The diameter and length of the shank vary depending on the specific size and grade of the bolt. Threads: The threaded portion of the hex bolt extends from the end of the shank to the tip. The threads are designed to engage with a corresponding threaded hole in a nut or a pre-tapped hole in the material being fastened. The most common thread standard for hex bolts is the Unified Thread Standard (UNC or UNF), although metric threads are also used in many applications. Grade: Hex bolts come in different grades, which indicate their strength and material properties. Common grades include Grade 2, Grade 5, and Grade 8, with Grade 8 being the strongest and most commonly used for high-strength applications.
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