Description :
*According to: ISO R861-1968
*Material: SCN3 (SCM435)
Specification :
- Strength Grade: 12.9 (M3~M20)
- Tensile Strength: 120~140 kgf/mm2
- Hardness: HRC 34~44
- Surface Treatment: Black Oxide
- Screw Threads: JIS B 0205 (Metric Coarse)/JIS B 0207 (Metric Fine)