... .Grade:Gr.8.8,10.9,12.9,etc 4.Material:#1008,#1022,#1035,#1045 Specification of our screw: 1.NameFlat countersunk head screws2 ... else of nuts we can offer?1.NameHex head bolt,Square head bolt,Round head bolt,Hex socket bolt,Carriage bolt, Track bolt,Flang ... ,BS, EN, SAE, ASTM3.GradeDIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5 ...