3/8"-16 Zinc Grade 5 Heavy Hex Nuts HNS5-133 (324 pcs.)

Diameter: 3/8"
Diameter 2: 25/32"
Thickness: 23/64"
Material: Steel
Finish: Zinc
Driver Type: 11/16" Wrench
Thread Size: 16 (Coarse)
Hardness: Grade 5
Style: Heavy
Type: Hex Nut

Box of 324.

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