图纸上标注drill & tap for 3/8-16 4 places.

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图纸上标注drill & tap for 3/8-16 4 places.

图纸上标注drill & tap for 3/8-16 4 places.
图纸上标注drill & tap for 3/8-16 4 places.

图纸上标注drill & tap for 3/8-16 4 places.
.有4处螺纹孔,3/8 为螺纹英制公称直径,16指每英寸的牙数(螺距)