High-Strength Bolt&Nut for Track Shoe/Roller/Segment/Sprocket 1.Materials: low carbon alloy steel ... of tie plates, clamps, fastenings, gauge plates, tie pads, fish plates and joint bars.4, Rail brace, welded ... fasteners.6, Nuts, flat washers and spring washers, plastic pads, nylon insulator, bushing etc.Stainless Steel Hex bolts nuts ... High-Strength Bolt&Nut for Track Shoe/Roller/Segment/Sprocket