metric thread fastener 公制螺纹紧固件
They have a quick-release fastener provided with thread.
他们有快速释放的并配有螺纹的按钮。
Screw: In machine construction, a usually circular cylindrical member with a continuous spiral rib or thread, used either as a fastener or as a force and motion modifier.
螺纹件： 机器结构中带连续螺旋肋的圆柱形件，用作紧固件或力和运动变换装置。
The fastener incorporates two or three loosely wound loosely wound thread-cutting blade-like helical projections (5) extending radially from a solid axial core (2).
该紧固件具有两个或三个切削松卷螺纹的刀状突起(5)，该刀状突起从实心的中轴(2)向外放射状延伸。
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