Diameter: 5/16"
Diameter 2: 9/16"
Thickness: 17/64"
Material: Steel
Finish: Green Rinsed Zinc
Driver Type: 1/2" Wrench
Thread Size: 18 (Coarse)
Hardness: Grade 5
Type: Hex Nut
Box of 904.
Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.