Cap nuts, also called acorn nuts, enclose the end of a bolt for a finished appearance while protecting against sharp thread ends.
Nominal Size: 5/16"
Thread: 18 TPI (Coarse)
Width Across Flats: 1/2"
Height: 9/16"
Across-Corners Size: 5/8"
Material: Stainless Steel
Shape: Acorn
Hardness: 18-8
Type: Cap Nut
A closed nut having a dome-like cap over the back, protruding part of the engaged screw or bolt. Also called an acorn nut.
