High-Strength Bolt&Nut for Track Shoe/Roller/Segment/Sprocket 1.Materials: low carbon alloy steel 20MnTiB 2. ... , 12.9 1, Elastic rail clips2, Dog spikes, square head screw spikes, timber drive spikes, T-bolts, fish bolts, switch & crossing bolts ... , Nuts, flat washers and spring washers, plastic pads, nylon insulator, bushing etc.Stainless Steel Hex bolts nuts washers High strength HDG ...