1/2"-20 Black Chrome Plated Steel Fine Thread Acorn Nuts (3 pcs.)

Diameter: 1/2"
Thickness: 1-3/32"
Material: Steel
Finish: Black Chrome
Driver Type: 3/4" Wrench
Thread Size: 20 (Fine)
Shape: Acorn
Type: Cap Nut

Box of 3.

A closed nut having a dome-like cap over the back, protruding part of the engaged screw or bolt. Also called an acorn nut.