18mm-2.5 x 55mm Plain Class 10.9 Steel Coarse Thread Hex Cap Screws

Diameter: 18mm
Length: 55mm
Material: Steel
Finish: Plain
Head Style: Hex (#27 Wrench)
Thread Size: 2.5mm (Coarse)
Thread Length: 42mm
Hardness: Class 10.9
Type: Cap Screw
Specifications: DIN 931

Box of 2.

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