20mm-1.5 x 50mm Zinc Plated Class 8.8 Steel Extra Fine Thread Hex Cap Screws
Head Style: Hex (#30 Wrench)
Thread Size: 1.5mm (Extra Fine)
Thread Length: 50mm
Hardness: Class 8.8
Type: Cap Screw
Specifications: DIN 960
A hex cap screw has a hexagonal head, designed to be driven by a wrench.