公称直径 （英寸）	每英寸 牙数n	螺距t	螺纹直径			牙形高度 h1	圆弧半径 r
			外径d	中径d2	内径d1
（1/8）	28	0.907	9.729	9.148	8.567	0.581	0.125
1/4	19	1.337	13.158	12.302	11.446	0.856	0.184
3/8	19		16.663	15.807	14.951	0.856	0.184
1/2	14	1.814	20.956	19.794	18.632	1.162	0.249
(5/8)	14		00.912	21.750	20.588
3/4	14		26.442	25.281	24.119
(7/8)	14		30.202	29.040	27.878
1	11	2.309	33.250	31.771	30.293	1.479	0.317
1.1/8	11		37.898	36.420	34.941
1.1/4	11		41.912	40.433	38.954
1.3/8	11		44.325	42.846	41.367
1.1/2	11		47.805	46.326	44.847
1.3/4	11		53.748	52.270	50.791
2	11		59.616	58.137	56.659
2.1/4	11		65.712	64.234	62.755
2.1/2	11		75.187	73.708	72.230
2.3/4	11		81.537	80.058	78.580
3	11		87.887	86.409	84.980
3.1/2	11		100.334	98.855	97.376
4	11		113.034	111.556	110.077
5	11		138.435	136.957	135.478
6	11		163.836	162.357	160.879