These vintage-inspired black oxide nuts are for use with machine bolts and machine screws. Browse below for our selection of square nuts and hex nuts for sale.
Head thickness:
- 8-32 = 1/8" thick
- 1/4" = 0.2"
- 5/16" = 1/4" thick
- 3/8" = 5/16"
- 1/2" = 7/16" thick