Diameter: 18mm
Length: 50mm
Material: Steel
Finish: Zinc
Head Style: Hex (#27 Wrench)
Thread Size: 1.5mm (Extra Fine)
Thread Length: 50mm
Hardness: Class 8.8
Type: Cap Screw
Specifications: DIN 960

Box of 2.

A hex cap screw has a hexagonal head, designed to be driven by a wrench.