Self-tapping washer screw 42x13mm 40pcs galvanized Self-tapping washer screw with dimensions 42x13mm is a specialized mounting element that is used for fastening thin steel sheets as well as to wooden substrates. This screw has a built-in washer, which is useful when fastening elements to substrates Parameters Length 13 mm Diameter 42 mm Quantity in the package 40 pcs Material Carbon steel, galvanized Size PH 2 Advantages Guarantees proper pressure Self-tapping tip Galvanized coating protects screws against corrosion