蝶形螺丝
a螺栓螺母规格GB标准方形螺母C级GB39-88六角螺母C级GB/T41-2000六角厚螺母GB56-88蝶形螺母GB62-88环形螺母GB63-88组合盖螺母GB802-88球形六角螺母GB804-88紧固螺母GB805-88滚花高螺母GB806-88滚花薄螺母GB807-88小六角超扁细牙螺母GB807-885-88侧面带孔圆螺母GB816-88开槽圆螺母GB817-881非金属嵌件六角锁紧螺母GB/T889.1-20001非金属嵌件六角锁紧螺母细牙GB/T889.2-2000盖形螺母GB923-88...
更新时间:2023-03-15标签:
蝶形螺丝蝶形螺丝
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