... Material:#1008,#1022,#1035,#1045 Specification of our screw: 1.NameFlat countersunk head screws2.StandardDIN, IFI, ISO, JIS, ... , BSW, BSF, TR, ACME, NPT5.MaterialCarbon steel(#1035,#1045,40Cr,35CrMo,42CrMo,B7,20Mn2,M20) , ... Stainless steel(303,304,304L,316,316L),Brass(H59 ... BSW, BSF, TR, ACME, NPT5.MaterialCarbon steel(#1035,#1045,40Cr,35CrMo,42CrMo,B7,20Mn2,M20),Stainless ...