Metric System Fine Thread Highly Finished and Semi-Refined Hexagonal Head Bolt
  ACCORDING TO :DIN931 (1)(2)
  MATERIAL:45# 40CR 35CR MO
STRENGTH GRADE:8.8S 10.9SÂ
DIN HEXAGON SOCKET HEAD CAP SCREWSÂ
  ACCORDING TO :DIN931 (1)(2)
  MATERIAL:45# 40CR 35CR MO
STRENGTH GRADE:8.8S 10.9SÂ