Nuts Hex nuts are used in conjunction with screws and bolts to connect parts. ASME ANSI hex nut covers the dimensional requirements of inch series hex nut. The common standard of ASME/ANSI hex nut is ASME B18.2.2. It includes normal hex nut, hex thin nut, hex thick nut and heavy hex nut. The size from 1/4-4" diameter. DIN standard is DIN934. Hex nut is widely used, mainly in the field of...