... rail anchors.5, Standard fasteners.6, Nuts, flat washers and spring washers, plastic pads, nylon insulator, bushing etc.Stainless Steel Hex ... .40Cr Bolt4.excavator and bulldozer track shoe bolt.We supply various dimension track shoe bolt ,which are used for caterpillar, komatsu, hitachi, kobelco, ... and commercial ship building industry High-Strength Bolt&Nut for Track Shoe/Roller/Segment/Sprocket