Diameter: 20mm
Length: 100mm
Material: Steel
Finish: Zinc
Head Style: Hex (#30 Wrench)
Thread Size: 2.5mm (Coarse)
Thread Length: 46mm
Hardness: Class 8.8
Type: Cap Screw
Specifications: DIN 931
A hex cap screw has a hexagonal head, designed to be driven by a wrench.