Carbon Steel Bolts and Nuts 1.Standard:ANSI, DIN, AS, BS and etc 2.Material: Stainless Steel or Carbon Steel Carbon Steel Bolts and Nuts Product Description ... 9 or 2-86. Standard: ANSI, DIN, AS, BS and etc7. Example: DIN912, DIN931, DIN933, DIN571, A-10, A-6, ... ISO4014, ISO4017, etc8. Production Processing: Cold forged or Hot forged9. Surface: Whited, Plain, Zp, HDG and ...