8mm-1.25 x 55mm Black Phosphate Class 10.9 Hex Cap Screws (101 pcs.)
Diameter: 8mm Length: 55mm Material: Steel Finish: Black Phosphate Head Style: Hex (#13 Wrench) Thread Size: 1.25mm (Coarse) Thread Length: 22mm Hardness: Class 10.9 Type: Cap Screw Specifications: DIN 931 Box of 101. A hex cap screw has a hexagonal head, designed to be driven by a wrench.