... switch & crossing bolts, high tensile strength bolts for rail bridges etc.3, Various type and sizes of tie plates, clamps, fastenings, gauge ... ASME B18.2.3.7Product name: Track bolt and nut Model: As per machine Material: 40Cr Processing: Forging Size: M12*40 ... Chrome, H.D.GPackingCarton, Box, Bag, PalletQuality AssuranceISO 9001Our bolts and assembly products are used by a wide variety of individuals ...