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　"7/16-20unf螺纹底孔"...7/16-20unf螺纹底孔

　"7/8-14unf螺纹底孔"...7/8-14unf螺纹底孔

　"7/16-24螺纹底孔"...7/16-24螺纹底孔

　"7/16-26unf螺纹底孔做多大"...7/16-26unf螺纹底孔做多大

　"7/16螺纹底孔多大"...7/16螺纹底孔多大

　"7/16-28螺纹底孔多大"...7/16-28螺纹底孔多大

　"tr14×2-7h螺纹底孔"...tr14×2-7h螺纹底孔

　"8/3-16螺纹底孔"...8/3-16螺纹底孔

　"7/16-20螺纹底孔多大"...7/16-20螺纹底孔多大