5/16"-18 x 1" Zinc Plated Steel Coarse Thread Spade Head Thumb Screws

Diameter: 5/16"
Length: 1"
Material: Steel
Finish: Zinc
Head Style: Spade
Thread Size: 18 (Coarse)
Type: Thumb Screw

Box of 4.

A thumb screw is a threaded fastener designed to be twisted into a tapped hole by hand without the use of tools.