A Flange Bolt is a specialized type of fastener that integrates a non-threaded, circular flange (or washer-like bearing surface) directly beneath the bolt head. This design combines a standard hex or other drive head with a built-in load distribution feature.

A Flat Washer, also known as a plain washer, is one of the most basic and essential fastening components. It is a simple, flat disc with a central hole, placed under a nut or bolt head.

The allen bolt ,commonly known as hex socket head cap screw or hex socket head cap screw , is a versatile fastener distinguished by its cylindrical head with a hexagonal (hex) internal drive.

The Thick Hex Nut, also known as a Heavy Hex Nut, is a standard mechanical fastener defined by its greater thickness (height) compared to a standard hex nut of the same nominal diameter.

The hex thin nut ,commonly known as hex jam nut or lock nut , is a type of hex nut distinguished by its reduced height—typically about half the thickness of a standard hex nut.