... spike, dog spike,sharp-end spike and so on railway fastener(screw spike)A: B:Elastic bar, lock washer, fishplate, rail ... , steel sleeper, rail anchor, track rod, gauge plate, nylon yarn, rubber foot.2 Standard componentsA: Hex bolt, square bolt, steel structure ... flange nut, slotted nut, high strength nut for bolt.3 Fastener Spring washer, flat washer, split pin4 Anti-loosen Fasteners Various ...