Ang hexagon bolts kay hexagon head bolts (partial thread) - grade C ug hexagon head bolts (full thread) - grade C, nailhan usab nga hexagon head bolts (rough) hair hexagon head bolts, black iron screws.Ang kasagarang gigamit nga mga sumbanan makita sa: Din931, Din933 GB5782, GB5783, ISO4014, ISO4017, etc.