Head: Pan /Countersunk ,with or without ribs Recess: Pozi,Philips and Torx Material: C1022 Harden Standard: DIN7505A,DIN7505B Surface: Yellow Zinc Plated,Blue Zinc Plated Diameter: 2.5mm-6mm/ #3-3/8 Length: 10mm-180mm/ 3/8-7...[more]