(Heavy) Hexagon Bolts
Heavy Hexagon Bolts (or just Hexagon Bolts) is a generic term for all bolts fitted with a hexagonal head. The term ‘hexagon bolts’ is often used for bolts with a smooth shoulder while the term ‘hexagon set screw’ or ‘machine bolt’ is often used for fully threaded bolts. They are usually delivered with a 3.1 certificate and are ‘marked’ with a quality indication and a manufacturer’s logo.
Standard: ANSI B18.2.1
The diameters are specified in inches (e.g. 5/8”). For hexagon bolts with a metric diameter (e.g. M16) and an ASTM quality there are generally fewer options which are not included in the ANSI B18.2.1.
Hexagon bolts can be obtained in many different diameters as well as many different qualities and types.