... spiral spike, dog spike, turnout spike.B:Elastic bar, lock washer, fishplate, rail support, steel sleeper, rail anchor, track rod ... , square bolt, steel structure bolt, torshear type high strength plain washer, high strength bolt for bridge, stud, timber spike, hexagon ... nut, high strength nut for bolt. 3 Fastener Spring washer, flat washer, split pin4 Anti-loosen Fasteners Various nuts and bolts ( ...