... , threaded rod, anchor bolt, nail, other off-standard fasteners and following to the drawers of ... sizesAccording to clientsClassAccording to clientsShape of headSquare, or according to custmoers' requirementsSurface treatmentBlack, Hot-dip ... Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel etc.SizeM16-M30Length40mm-200mmTensile strengthMax:1240Mpa ...