... : 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 ... , ISO4014, ISO4017, etc8. Production Processing: Cold forged or Hot forged9. Surface: Whited, Plain, Zp, HDG and Black zp, Chromed10. Quality: Approved ...