left-hand threaded nut 左旋螺母
left hand threaded
左螺纹
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Also known as Hex Head Screws or Hex Head Bolts. Includes Standard, Drilled Head, Left Hand Threaded, Self-Sealing, and Military Specification Cap Screws.
也称为六角头螺丝或六角头螺栓。包括标准，钻孔头，左旋螺，自封式，军用规格螺栓。
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