... as customers'drawing Railway FastenersA: Railway bolt, square head screw spike, T type bolt, 70 rail spike, spiral spike, ... nylon yarn, rubber foot.2 Standard componentsA: Hex bolt, square bolt, steel structure bolt, torshear type high strength plain washer, high ... timber spike, hexagon flange bolt, bolt for carriage, handing down bolt, T type bolt, hinged bolt.B: Hex nut, square nut, hex flange nut ...