Item No.: 010403 Standard:Din975/976-1( Type A) Material : Metal Steel, Stainless Steel, Brass Finish: Self color , Zinc Plated, Zinc&Yellow, Black ,HDG Grade:4.8, 5.8 ,6.8, 8.8,10.9, 12.9 Sizes available from :Diameter M3 to M100 Length: 20mm to 300mm