MATERIAL BAND AND HOUSING: GALVANIZED STEEL (DIN 1.0935) SCREW: STEEL Qst 36-3 (DIN 1.0214) FINISH BAND AND HOUSING: GALVANIZED STEEL SCREW: GREY-WHITE Cr3 ZINC-PLATED CORROSION RESISTANCE 144 HOURS SALT SPRAY (ASTM B-117) MAXIMUM TIGHTENING SPEED (RPM) 540 ±5.