Diameter: 20mm
Diameter 2: 34mm
Thickness: 17mm
Material: Steel
Finish: Black Phosphate
Driver Type: #30 Wrench
Thread Size: 2.5mm (Coarse)
Hardness: Class 10
Type: Hex Nut
Specifications: DIN 934
Box of 41.
Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.