Bolts and Nuts: 1.Surface: steel zinc plated 2. Size: M2 to M100 3. Material: stainless steel Bolts and Nuts1.Material:Stainless Steel or Carbon Steel2.Head mark:OEM 3.Dia:1/4-1" (ANSI),M5-M36(DIN)4.Length:5/8-14"(ANSI),16-400MM(DIN)5.Grade:A2,4.8-12.9 or 2-86.Standard:ANSI,DIN,AS,BS and etc7.Surface:Whited,Plain,Zp,Hdg and Black zp,Chromed