螺紋緊固件
螺紋緊固件（英語：）是一種内壁或外壁刻有螺紋的機械零件，一般作為方便多個部件組合的緊固件使用[1]。最常見的螺紋緊固件是螺钉、螺帽及螺栓，不過也有其他的螺紋緊固件，例如浮动螺母、螺桿、螺紋插件等。
結構用螺栓DIN 6914，DIN 6916墊片以及UNI 5587螺帽
外部連結
- "Hold Everything" February 1946, Popular Science page from article describing screw fastener technology developed during World War Two
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