Introduction of Outer Hexagon Bolts

Specification introduction of outer hexagon bolts Outer hexagon bolts thread M8 × 1~M64 × 4. Hexagon head bolts with fine thread, full thread, performance grade 5.6, 8.8, 10.9, A2-70, a4-70, a2-50, a4-50, Cu2, cu3 and AL4, product grade A and B. Mark example: 1. Thread size d = M12 × 1.5, nominal length L = [...]