Diameter: 8mm
Diameter 2: 13mm
Thickness: 6.3mm
Material: Steel
Finish: Zinc
Driver Type: #13 Wrench
Thread Size: 1.25mm (Coarse)
Hardness: Class 8
Type: Hex Nut
Specifications: JIS
Box of 25.
Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.