M12-1.75 x 50 Flat Socket Cap Screw 12.9 DIN 7991 Zinc Plated

M12-1.75 x 50 Flat Socket Cap Screw 12.9 DIN 7991 Zinc Plated . Zinc plated Flat Socket Head Cap Screws from Brighton Best. Hardness of RC 38-43, meets or exceeds DIN 7991. Manufactured from heat treated alloy steel, 1960 series.