7/16"-20 Polished 18-8 Stainless Steel Fine Thread Acorn Nuts (4 pcs.)

Diameter: 7/16"
Diameter 2: 45/64"
Thickness: 15/16"
Material: Stainless Steel
Finish: Polished
Driver Type: 5/8" Wrench
Thread Size: 20 (Fine)
Shape: High Crown Acorn
Hardness: 18-8
Type: Cap Nut

Box of 4.

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