1) English thread,inch thread,inch system thread

英制螺纹

2) coarse threads

大螺距英制螺纹

Tooling designing on coarse threads in fluid end;

介绍通过设计专用工装,得到了在普通卧车上加工液缸上大螺距英制螺纹的成功经验。

3) English system

英制

According to the situation that the PDS database is American English system,this paper makes a change it to metric system, and also provides detail methods for all data files related to English and metric system, that is piping materials class data files, piping specification data files, piping job specification database and p.

针对ＰＤＳ所携带的数据库是美国英制管件库这种情况，本文提出了ＰＤＳ数据库公制化设想，并且对与公英制有关的所有数据文件，即材料等级列表文件、管件种类列表文件、管件规范库和几何尺寸库提供了具体的实现方法。

4) inch-system lead screw

英制丝杠

Adopting special lantern gear to minify the drive error of the screw drive chain on CA6140 lathe,high-precision inch-system lead screw and modulus lead screw can be processed.

采用专用挂轮,减小了CA6140螺纹传动链的传动误差,可加工出高精度英制丝杠和模数丝杠。

5) standard of british system

英制标准

6) English count

英制支数

Unification of cotton yarn count conversion factor between English count and tex system;

棉纱线英制支数与特克斯之间转换系数的统一

参考词条

英制孔径英制马力英制轴承英制外螺纹公英制转换英制度量衡英制捻系数英制微型轴承英制渐开线花键熔融石英制品 [英制]梯形螺纹公英制并用标签管径英制代号<液> 三级鉴定 SAR图像目标

补充资料：英制惠氏螺纹的型式尺寸

英制普通螺纹 (惠氏螺纹) -- 粗牙 (BSW)
名义尺寸 Ww	牙型代号	大径 mm d=D	螺距 mm p	每英寸牙数 tpi	中径 mm d2=D2	小径外螺纹 d3	牙型高 H1	底孔直径 mm
1/16＂	BSW	1.587	0.423	60	1.315	1.050	0.270	1.15
3/32＂	BSW	2.381	0.529	48	2.041	1.703	0.338	1.90
1/8＂	BSW	3.175	0.635	40	2.768	2.362	0.406	2.50
5/32＂	BSW	3.969	0.793	32	3.459	2.952	0.507	3.20
3/16＂	BSW	4.762	1.058	24	4.084	3.407	0.677	3.70
7/32＂	BSW	5.556	1.058	24	4.878	4.201	0.677	4.50
1/4＂	BSW	6.350	1.270	20	5.537	4.724	0.813	5.10
5/16＂	BSW	7.938	1.411	18	7.034	6.131	0.904	6.50
3/8＂	BSW	9.525	1.588	16	8.509	7.492	1.017	7.90
7/16＂	BSW	11.113	1.814	14	9.951	8.789	1.162	9.20
1/2＂	BSW	12.700	2.117	12	11.345	9.990	1.355	10.40
5/8＂	BSW	15.876	2.309	11	14.397	12.918	1.479	13.40
3/4＂	BSW	19.051	2.540	10	17.424	15.798	1.627	16.25
7/8＂	BSW	22.226	2.822	9	20.419	18.611	1.807	19.25
1＂	BSW	25.400	3.175	8	23.368	21.335	2.033	22.00
1 1/8＂	BSW	28.576	3.629	7	26.253	23.929	2.324	24.50
1 1/4＂	BSW	31.751	3.629	7	29.428	27.104	2.324	27.25
1 3/8＂	BSW	34.926	4.233	6	32.215	29.505	2.711	30.25
1 1/2＂	BSW	38.100	4.233	6	35.391	32.680	2.711	33.50
1 5/8＂	BSW	41.277	5.080	5	38.024	34.771	3.253	35.50
1 3/4＂	BSW	44.452	5.080	5	41.199	37.946	3.253	38.50
1 7/8＂	BSW	47.627	5.645	4 1/2	44.012	40.398	3.614	41.25
2＂	BSW	50.802	5.645	4 1/2	47.187	43.573	3.614	44.50
2 1/4＂	BSW	57.152	6.350	4	53.086	49.020	4.066	50.00
2 1/2＂	BSW	63.502	6.350	4	59.436	55.370	4.066	56.00
2 3/4＂	BSW	69.853	7.257	3 1/2	65.205	60.558	4.647	61.50
3＂	BSW	76.203	7.257	3 1/2	71.556	66.909	4.647	68.00
3 1/4＂	BSW	82.553	7.816	3 1/4	77.548	72.544	5.005	73.75
3 1/2＂	BSW	88.903	7.816	3 1/4	83.899	78.894	5.005	80.00
3 3/4＂	BSW	95.254	8.467	3	89.832	84.410	5.422	85.50
4＂	BSW	101.604	8.467	3	96.182	90.760	5.422	92.00
4 1/4＂	BSW	107.954	8.835	2 7/8	102.297	96.639	5.657	98.00
4 1/2＂	BSW	114.304	8.835	2 7/8	108.647	102.990	5.657	104.20
4 3/4＂	BSW	120.665	9.237	2 3/4	114.740	108.625	5.915	110.00
5＂	BSW	127.005	9.237	2 3/4	121.090	115.176	5.915	116.50
5 1/4＂	BSW	133.355	9.677	2 5/8	127.159	120.963	6.196	122.50
5 1/2＂	BSW	139.705	9.677	2 5/8	133.509	127.313	6.196	128.50
5 3/4＂	BSW	146.055	10.160	2 1/2	139.549	133.043	6.506	134.50
6＂	BSW	152.406	10.160	2 1/2	145.900	139.394	6.506	141.00

英制普通螺纹 -- 细牙 -- BSF

英制普通螺纹 (惠氏螺纹) -- 细牙 (BSW)
名义尺寸 BSF	牙型代号	大径 mm d=D	螺距 mm p	每英寸牙数 tpi	中径 mm d2=D2	小径外螺纹 d3	牙型高 H1	底孔直径 mm
3/16	BSF	4.763	0.794	32	4.255	3.747	0.508	4.00
7/32	BSF	5.556	0.907	28	4.975	4.394	0.581	4.60
1/4	BSF	6.350	0.977	26	5.725	5.100	0.625	5.30
9/32	BSF	7.142	0.977	26	6.518	5.893	0.625	6.10
5/16	BSF	7.938	1.156	22	7.199	6.459	0.739	6.80
3/8	BSF	9.525	1.27	20	8.712	7.899	0.813	8.30
7/16	BSF	11.113	1.411	18	10.209	9.304	0.904	9.70
1/2	BSF	12.700	1.588	16	11.684	10.668	1.017	11.10
9/16	BSF	14.288	1.588	16	13.272	12.256	1.017	12.70
5/8	BSF	15.875	1.814	14	14.712	13.549	1.162	14.00
11/16	BSF	17.463	1.814	14	16.300	15.137	1.162	15.50
3/4	BSF	19.050	2.117	12	17.693	16.336	1.355	16.75
13/16	BSF	20.638	2.117	12	19.281	17.924	1.355	18.25
7/8	BSF	22.225	2.309	11	20.747	19.269	1.479	19.75
1	BSF	25.400	2.54	10	23.774	22.148	1.627	22.75
1 1/8	BSF	28.575	2.822	9	26.769	24.963	1.807	26.50
1 1/4	BSF	31.750	2.822	9	29.944	28.138	1.807	28.75
1 3/8	BSF	34.925	3.175	8	32.893	30.861	2.033	31.50
1 1/2	BSF	38.100	3.175	8	36.068	34.036	2.033	34.50
1 5/8	BSF	41.275	3.175	8	39.243	37.211	2.033	38.00
1 3/4	BSF	44.450	3.629	7	42.126	39.802	2.324	40.50
2	BSF	50.800	3.629	7	48.476	46.152	2.324	47.00
2 1/4	BSF	57.150	4.234	6	54.440	51.730	2.711	53.00
2 1/2	BSF	63.500	4.234	6	60.790	58.080	2.711	59.00
2 3/4	BSF	69.850	4.234	6	67.140	64.430	2.711	-
3	BSF	76.200	5.08	5	72.946	69.692	3.253	-
3 1/4	BSF	82.550	5.08	5	79.296	76.042	3.253	-
3 1/2	BSF	88.900	5.645	4 1/2	85.285	81.670	3.614	-
3 3/4	BSF	95.250	5.645	4 1/2	91.635	88.020	3.614	-
4	BSF	101.600	5.645	4 1/2	97.985	94.370	3.614	-
4 1/4	BSF	107.950	6.35	4	103.886	99.822	4.066	-

说明：补充资料仅用于学习参考，请勿用于其它任何用途。