... Carbon Steel2. Head mark: OEM3. 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. Example: DIN912, DIN931, DIN933, DIN571, A-10, A-6, ISO4014, ISO4017, etc8. Production Processing: Cold forged or Hot ...