pt牙下孔徑. 下孔徑1/8PT 28 9.728 8.2 1/8PS 28 9.728 8.5 1/4PT 19 13.157 10.9 1/4PS 19 13.157 11.4 3/8PT 19 16.662 14.4 3/8PS 19 16.662 14.9 1/2PT 14 20.955 ...
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