①,Material: The thread rolling screws shall be made from cold heading, case hardening quality steel. The core hardness shall be 290 HV 10 to 370 HV 10, and the case hardness shall be 450 HV 0,3 minimum. According to DIN EN ISO 7085 |
①,Material: The thread rolling screws shall be made from cold heading, case hardening quality steel. The core hardness shall be 290 HV 10 to 370 HV 10, and the case hardness shall be 450 HV 0,3 minimum. According to DIN EN ISO 7085 |