#4-40 Brass Coarse Thread Hex Machine Screw Nuts

Diameter: #4
Thickness: 3/32"
Material: Brass
Driver Type: 1/4" Wrench
Thread Size: 40 (Coarse)
Type: Hex Nut

Box of 100.

Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.