... Nut for Track Shoe/Roller/Segment/Sprocket 1.Materials: low carbon alloy steel 20MnTiB 2.Property Class:8. Standard:GB/T 1228 ... , Rail brace, welded shoulders and rail anchors.5, Standard fasteners.6, Nuts, flat washers and spring washers, plastic pads, nylon insulator, ... for bolted connections with CE certifation 1.high strength track shoe bolt 2.Heat flush bolt3.40Cr Bolt4.excavator and bulldozer ...