... , high tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings, gauge plates, tie ... :Hardness: HRC36-42, Tensile strength: 170.000 P. S. I ( 120 Kg /mm 2 ) Elastic Load Limit: 140.000 P. S ... ''-1 1/4'' 5.High tensile Description(TC bolt) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless ...