... rail support, steel sleeper, rail anchor, track rod, gauge plate, nylon yarn, rubber foot.2 Standard componentsA: Hex bolt, square bolt ... flange nut, slotted nut, high strength nut for bolt. 3 Fastener Spring washer, flat washer, split pin4 Anti-loosen Fasteners Various ... nuts and bolts (Nylon anti-loosen, mechanical anti-loosen, screw anti-loosen types) ...