12mm-1.25 x 20mm Zinc Plated Class 8.8 Steel Extra Fine Thread Hex Cap Screws
Head Style: Hex (#19 Wrench)
Thread Size: 1.25mm (Extra Fine)
Thread Length: 20mm
Hardness: Class 8.8
Type: Cap Screw
Specifications: DIN 961
Box of 25.
A hex cap screw has a hexagonal head, designed to be driven by a wrench.