chen zhao
![]() | US $ 0.01 | Stock: 45000 | - + |
![]() | US $ 0.01 | Stock: 45000 | - + |
Grade 8.8 hexagon head bolts, use high carbon steel material to manufacture, like 35K 45#. Concerning surface treatments, we can provide black oxide and zinc plated. we have various sizes and lengths. Hexagon head bolts use widely in the whole world.