Shapeï¼ Hex Screws Sizeï¼ M3-M160 Thread typeï¼ Metric/MF Materialï¼ Steel, alloy steel,Stainless steel Gradeï¼ 4.8ã5.6ã8.8ã10.9ã12.9,A1-50,A2-50,A2-70,A4-50,A4-70,A2-80,A4-80 Standardï¼ DIN933 ISO4017 Coatingï¼ No coatingï¼Zincï¼Zinc-platedï¼