A fastener consisting of a threaded pin or rod with a head at one end, designed to be inserted through holes in assembled parts and secured by a mated nut that is tightened by applying torque.

• 螺栓一种由可穿过的栓或竿构成的条形紧固器，一端有头，用于插进集合部分相应的孔，再用配对的螺帽旋紧