... screw spike with plactic tuber Railway FastenersA: Railway bolt, square head screw spike, T type bolt, 70 rail spike, spiral spike, dog spike ... rubber foot.2 Standard componentsA: Hex bolt, square bolt, steel structure bolt, torshear type high strength plain washer, high strength bolt ... bolt for carriage, handing down bolt, T type bolt, hinged bolt.B: Hex nut, square nut, hex flange nut, slotted nut, ...