10mm-1.0 x 20mm Zinc Plated Class 8.8 Steel Extra Fine Thread Hex Cap Screws
Head Style: Hex (#17 Wrench)
Thread Size: 1.0mm (Extra Fine)
Thread Length: 20mm
Hardness: Class 8.8
Type: Cap Screw
Specifications: DIN 961
A hex cap screw has a hexagonal head, designed to be driven by a wrench.