1)Non-standard metal componets of steel nuts. 2)ISO9001, ISO14001, ISO13485. 3)Pass Torque Test ... coating, sand blasting etc.4) Certification: ISO16949, ISO9001, ISO14001, ISO13485.5). Standard : AISI, ASTM, JIS, BS, DIN, etc. 2. Item Details ... :1)Material: 1215.2)Hardness: HV350-4003)Dimension:H5.5*L7.4*M3.4)Torque:≥12kgf5)Surface Finish: Heat treatment.