... , T-bolts, fish bolts, switch & crossing bolts, high tensile strength bolts for rail bridges etc.3, Various type and sizes of tie ... 3.size:M8-M48 4.grade:8.8,10.9,12.Bolts and nuts:Mechanical Properties1, Material: 40 Cr.2, Tensile strength: Mpa ... 5/8''-1 1/4'' 5.High tensile Description(TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel ...