... bolts, switch & crossing bolts, high tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings ... 11/20 M24*75 15/16-3 Above is the sizes which are the most popular for your reference only, as a ... High tensile Description(TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel etc.SizeM16-M30Length40mm ...