缝纫机专用英制螺纹

1、缝纫机用英制螺纹 螺纹的基本尺寸按下列公式计算，数值圆整到小数点第三位数：内螺纹：D2=D-2 X 3/8HD1=D-2(3/4H-1/16H)外螺纹：d2=d-2 X 3/8Hd1=d-2 X 3/4H注：H-原始三角形高度D-内螺纹大径D2-内螺纹中径D1-内螺纹小径P-螺距r-外螺纹牙底圆弧半径d-外螺纹大径d2-外螺纹中径d1-外螺纹小径外螺纹牙底允许做成近似圆弧形，但不应有棱角。P=25.4/n n每英寸牙数H= V 3/2 P=0.866025404P 3/8H=0.324759526P1/8H=0.108253175Pr=1/8H=0.108253175P3/4H=0.64951

2、9053P1/16H=0.054126587P每英寸牙数螺距PH3/4H3/8H1/8H1/16H1000.2540.219970.1649780.0824890.0274960.013748800.31750.2749630.2062220.1031110.034370.017185640.3968750.3437040.2577780.1288890.0429630.021481560.4535710.3928040.2946030.1473020.0491010.02455480.5291670.4582720.3437040.1718520.0572840.028642440.5772

3、730.4999330.374950.1874750.0624920.031246400.6350.5499260.4124450.2062220.0687410.03437320.793750.6874080.5155560.2577780.0859260.042963280.9071430.7856090.5892070.2946030.0982010.049101241.0583330.9165430.6874070.3437040.1145680.057284221.1545450.9998690.7498990.3749490.1249830.062492201.271.099852

4、0.8248890.4124450.1374820.068741181.4111111.2220580.9165430.4582720.1527570.076379161.58751.3748151.0311110.5155560.1718520.085926122.166671.8330871.3748160.6874080.2291360.114568直径系列与螺距序号公称直径每英寸牙数n螺距Pmm第一系列第二系列第三系列11/16800.31825/64640.39733/321000.25443/32560.45451/8480.52961/8440.57771/8400.63589/

5、64400.635911/64400.6351011/64320.794113/16400.635123/1617/64320.794133/16280.907143/16241.058155/1613/64320.794167/32320.794177/32221.1551815/64280.907193/8400.635201/43/8280.907211/4241.058221/4201.272317/64320.794249/32280.907259/32201.27265/16280.907275/16241.058285/16181.4112911/32280.907303/828

6、0.907313/8281.411323/8161.588337/16280.907347/16161.588351/2280.907361/2201.27371/2122.117389/16201.273911/16280.907407/8201.27411201.274213/16241.058注：螺纹直径应优先用第一系列，其次是第二系列，第三系列尽可能不用。1级精度螺纹的极限尺寸及公差序号公称直径> d、D每英 寸牙 数螺距P外螺纹内螺纹大径d小径d1中径d2中径D2大径D小径D1最大最小公差最大最大最小1公差最小1最大最小最小最大公差inmmnmm11/161.588800.31

7、81.5881.5320.0561.1761.3821.340.0421.3821.4241.5881.211.2810.07125/641.984640.3971.9841.9210.0631.4681.7261.6780.0481.7261.7741.9841.5111.5910.0833/322.3811000.2542.3812.3280.0532.0512.2162.1760.042.2162.2562.3812.0792.1460.06743/322.381560.4542.3812.3140.0671.7922.0862.0360.052.0862.1362.3811.8411.

8、9410.151/83.175480.5293.1753.1040.0712.4882.8312.7780.0532.8312.8443.1752.5452.6510.10661/83.175440.5773.1753.10.0752.4252.82.7440.0562.82.8563.1752.4882.60.11271/83.175400.6353.1753.10.0752.352.7632.7070.0562.7632.8193.1752.4192.5310.11289/643.527400.6353.5723.4970.0752.7473.163.1040.0563.163.2163.

9、5722.8162.9280.112911/644.366400.6354.3664.2910.0753.5413.9543.8980.0563.9544.014.3663.613.7220.1121011/644.366320.7944.3664.2660.13.3353.853.790.063.853.914.3663.4213.5610.14113/164.762400.6354.7624.6870.0753.3974.354.2940.0564.354.4064.7624.0064.1180.112123/164.762320.7944.7624.6620.13.7314.2464.1

10、860.064.2464.3064.7623.8173.9570.14133/164.762280.9074.7624.6560.1063.5844.1734.110.0634.1734.2364.7623.6823.8320.15143/164.762241.0584.7624.650.1123.3874.0754.0080.0674.0754.1424.7623.5023.6620.161513/645.159320.7945.1595.0590.14.1284.6434.5830.064.6434.7035.1594.2144.3540.14167/325.556320.7945.556

11、5.4560.14.5255.044.980.065.045.15.5564.6114.7510.14177/325.556221.1555.5565.4380.1184.0564.8064.7350.0715.8064.8875.5564.1814.3510.171815/645.953280.9075.9535.8740.1064.7755.3645.3010.0635.3645.4275.9534.8735.0230.15191/46.35400.6356.356.270.085.5255.9385.8780.065.9385.9986.355.5945.6940.1201/46.352

12、80.9076.356.2380.1125.1275.7615.6940.0675.7615.8286.355.275.430.16211/46.35241.0586.356.2320.1184.9755.6635.5920.0715.6635.7346.355.095.260.17221/46.35201.276.356.2250.1254.75.5255.450.0756.5255.66.354.8385.0180.181级精度isR纹的极限尺兀f及公差序公称W禅寸券 数螺距P外螺纹内螺纹£D人径d小衿dl屮径d2屮径D2人径D小径叽晟人図小1炜、SA最大1虽小11公首f 1最小

13、1 S犬最小最小丨虽大1公遊号inTimnmm231 /Mfi. 717320. 7916.7476* 641圧lOfi5.7166. 2316. 16S圧063乩2316. 294札717反8025.9526 1524LI/327. N428D 9077. 1447. 032圧1125. 966隹5556. 4S80. 067生5556. 622化1446, 064& 2阴G 1625y/327. 144201.277. 1447.ojy1255. 494& 319 16. 2440. 075& 3196,的47. 1445. 6325, H12(L IS265/16

14、7. 93828a 9077. 9387. 826圧112反767. 3497. 2K20. 0677. 3497. 4167.6386. H587.0180. 16275/此T.yJB24L 0587.y3d7.120, 1186. 5637.必7. 180, 0717.2517> 3227.6386 678反81?285/ 167.93818L 4117. 9387. 806圧1326. 1057. 0216. 9410. 087.0217. 1017.638& 2586 4480. 192911/328. 731280 9078. 7318.6190. 1127.5538.

15、 1428. 0750. 067& 1128. 2098.7317.6157.8110. 16303/89. 525280. 9079. 5259.4130. 1128. 3478. 936乱869圧067& 9369. 0039.525& 4458.6056 19313/H9. 525IKkill9. 525乳393圧1327. ti92& HOK8. 52S6 08S.fiOK8. 688虫5257.M5&俪0. 19323/89, 525IfiL 5SR9. 525乩3936 1327.463& 4948,4140, 08& 4&#

16、174;& 574tj.5257,6357* S256 19337/ 1GIL 11228(k 907IL 11210. 9940. 1189. 93110. 52310. 4520. 07110. 52310. 59111. 1L210. 03210. 2020. 17347/ 16IL 112lbL 58811. 11210. 972e 149.術IfK mW9. 9960, 08510.08110. 1661L 1129. 222乩1220.2351/212.72«f). 90712. 712. 5S20. IIS11.52212. IH12. 04圧07112, il

17、l12. 1X212. 711*211.790. 17361/212.7201.2712. 712. 66H(1 13211,0511,875IL 795o7o811. 87511.95512.71L11. 3780. 19371/212.712N 11712. 712 540. 16乩95IL 32511.230, 09151L 325IL4212.710. IS10. 4040. 224JS9/ 1614. 288201.2714. 28811, 1560. 13212. 63813, 16313. 3830. 0813. 46313. 54311. 28812, 77612. 966(X

18、 193911/1617. 46228仇90717. 46217, 34411816. 28416* 87316.RG20. 07116. fi7316. 94417.46216. 38216.5720. 17407/822, 225201.272N 22522, 0850, 1420, 57321.421/A130. 08521.421.48522,22520. 71320,9130.241L25, 4201.2725.425. 260. 1423- 7521. 57524. 490. 08524.57524.6625.423. 88824.0880.2斗2丨1 :"曲丨：血】62

19、| 24节,仲丨：灿1盟I：讥磁|心014|2&術 h乩価1 2乩加丨0财5 129 4刃乜乩廉丨和，Ifbs 机恢100*22级精度螺纹的极限尺寸及公差序公称K住毎英 寸牙 数螺距P外螺纹内螺纹大彳上d小從dl屮径韭屮径民人彳空D小於1)1d.D最人1最小1公是最人最人最小1公筈1最小1最人最小最小1最人1公差号;illinmnmm1I / 161. aSbHO0. 31S1. 58SL5O30, 0S51. 176L3S2L m0.0閃1.3S2L445L 5KS1.21L 3160, 10625/MI.9ft4M0. 3971.9尉L8890. 951.481 + 726L 65

20、SD. 0711.726L797L984LG11Lfi29a IIS33/322. 3811000, 2542. 3S12. 3010, 082. 0512.216巳1550. 062. 216毗阳2, 3812. 0792. 1790. 143/322. 381560. 4542. 3S1Z 2R1fX 11.792巳08G2.0110. 0752.0862. 1612.381LR41L9910. 1551/电3. 175 i480. 5293. 1753, 0690, 1062. 4S82* S312, 7510. 082.S312.9113* 1752,5452, 7050, 16nI/

21、ft3. 1 ?£14577ama网f), 1122. 1252.82.7iri0. 0B52 82+ R丽3* 1752,1882+伽,0, 177i/S3. 175 1W0. 6353. 1753.0630. 1122. 35£ 7632. 6786 0R52.763£ 8483. 175跖192. 5890. 179/643. 57240氏6353, 5723, 460. 1122. 7473. IB3, 0750. 0B53. 1'63. 24b:< 5722. HIB2. 9HG0. 17gH /641.:磁400. 635化366心254

22、0. 1123. 5113+ 9543, Rtsg0'. 0853. 95-1t 039k 3663.61:L 780. 171011/644. 3fUi32f). 7944. 3664. 216fl. 15a 335a S5:L 7(i0. 093+蔺3.944+ 366:皿11 )330.212H3/164.762100. 635儿7621. 650 1123.9371.35丄2650.阳54陆4*-135< 7624. 0064* 1760. 1712H/ in4. 762杀n. 7944. 7R24,fi12n. 153. 7?14, 24fi4. 15百0, 094.

23、2464.鹉石4, 762574, 0290,212133/ 161. 76228C). 907化7621.6020. 163. 584L 173丄0780. 0954. 173丄2684. 7623. 6S23+906a 221M3/ W4. 702 124L俯< 7fi2d 5920. 17Z 3R74. OT-i3. 97ri0. 14. 075175L 7G23. 502* 7284 23fi15J3/615. 159 '32fX 7915. 1595, 009e 15d. I2S4* 6434. 5530, 094.6431* 7735* 1594,2114* 1260

24、*212Id7/325.底賢32f). 7945, 5,1fiii. 4060, 154. 5255. 044”册n. 09民045,鼠砧应4, fill4. S23a 212177/3255622L 155a 5565, 3760. IS4.0564. 8064.70. 1964.80619125. 5564. 1S14. 1:10. 251815/61民9胃2R0. 907N 953fk 793fl, 164, 775fk 3645, 2690 0955. 364工459伉9534, R73fk 097e 224191/46, 3540也635反35b, 2250, J 255, 05乩9

25、385,昭0, 095. 938反(J2S6.閔5. 5945. 7740, 18201/4& 35280.907& 35(K 180. 175, 1725. 7615.661OH5. 7G15. 861& 355.275. 508(X 236211/46. 35241 0586. 356, 170. 184.9755. 663严LLq0, 1065* 663£ 7696355.095. 346 25221/4& 33201.276. 35(1 160. J94. 7匚525H30. 1121 5- 5255. G37& 35生 838 15.

26、 1030.2652级精度螺纹的极限尺寸及公差序公称立屈金*英螺葩外螺纹内螺"才人彳衣小徑dl屮径大径U小径D1lKD数P最人嚴小1公差最人1最小1 a差1屋小最人iiS小最小1昼人1公差豺inHilt11IUD2317/646, 747320, 7946,747& 5870, 165. 716G. 2316+136(X 095G.2316. 326G. 7475. 8026,0200, 224249/327. 1442g0.9077, 144& 9740. 175, 96(56. 5556, 155(X 16.5556. 6557. 1446, 0646,30. 2

27、3625y/327. 14420L 277. 1446. 9540. 19耳494& 3196. 2070. 1126.3W6.4317. 1445. 6325. H970. 28526S/ 167. 9：论2«0. 90774丽7. 7倘(L 176. 767.；佑7. 249n. 17.3197. 4197. g貂住S587. (94(L 2S6275/ IB7,収24.()5S7, V3H7伽0* 1K工幻7, 145ck 1 Ob7.2517. 3577, 9：協& &7X丘血&厲252815/ 161* 93y18U4ii7,93S7. ?3

28、y0 26. W57. 021匕9030. 1 187. 0217. 1397, 938& 2 58百.53«0.2S29111/32& 731280.9078. 731& 5610. 171、553& 142& 0120. 1& M2&訓2& 7317. 6517. fi870. 236303/8乐龙订280価了9. .5259.炳0. 17民3178. 936& 8360. 1& 9阴乩03BS. 5258.4458.fi8l(X 23fi313/S2 525WLIU9忌59. 32n0 27. G9

29、2& 49CL 118艮6胚fi.7269. 52S7. 84SH. 1250.2B1 333/89. S2516L588乩曲30 3250 27. 163乩！射乩3760. 118乩8,6120. S257. 6357,9150.20337/1611. 112280,50711. 11210* 9320* 189. 93410.52310,1170. 1061A 52310, 62911. 11210. 03210. 2820,25347/1611. 11216b5881 m务1/212.72X907丽1/212,7別L 27371/212,713M 1173Sl9/ Ifi14.

30、28820L 273911/ W17.462280.907407/822. 225201. 2741L25.1201. 27421 3/1630. iti224LOSS3级精度螺纹的极限尺环十及公差序公称直彳彳埒英;螺距外螺纹内螺纹寸牙大徊小彳令灯屮你2中径憶大小径D1fL1)数P最大最小1公差最大最大iE小1公筮11垠小1最大最水垠小最大公基号iniiini11mtn11/ le1.5S8800.318一 125 / 611脚610, 397 133/322. 3£11000. 25113/ :WN溜1561542. 3812.2190. 1321.7922,061.986(LI2

31、. 0862, 1862. 3811.8112.0110.251门a* 17518a龙93. 175 035a 11九W82. 7厉(X106N9373. 175么5152.7570 21261 /fi3. 1754 10. 5773. 1753.0250. 151 12512. 6RK0. 1122.82. 9123. 175Z用RZ 7120. 22171/X3. 175W0. 6353. 1753. 0250. 152. 352, 7储 52. 6510.1122 7632. 8753. 1752. 1192, 6 U(J. 22189/613. 572100. 6353 5723, 1

32、220. 15Z 7173.163. 0180. 1123* 163,2723.5722,8163,010. 221911/64L 3(16W0- 6354.36ti1.2160- 15乱51 3. 9513. K120. 112£ 9511 0661. 3663O 2刘1011/ 611. 3能320. 7944. M刖化1660 23. 3353.R5 13. 7320, 118乩853. 9開t 366乩M 701(L閔113/ 161. 7右 2100. 6354. 7621.6120. 153 9371.35 :4. 2380, 1124. 351. 1621. 762L

33、0061. 230. 221123/ 164, 762320. 7944.7621, 5620. 23. 7311. 2161. 1280. L11216L 3611.7623,817L097a 28133 / 161 7也囲0. 9074. 7621.550.2123 581化1734. U180. 1251. 173t 2981. 762出682:土 9塔 2(K 3bl3 / 161加221L05X4.762片.a3K0.22)3. 3K7kO752. 9430. 132t 0751-2071. 762M 5(12：t K170.3151513/615. 159320. T945. 15

34、91. 9590. 21. 1281. 6131. 5250. 1181. 6134. 7615. 1591. 2111. 1940. 28167/320. ;x)6320. T915. 5565 3560. 21 5255. 011. 9220. 1185. 015. 1585.5561.611L 8910. 28177/32r- -rl0. jab22L 1555.議5.320. 236L 056t. 8G61. 6«6). 11L SG6t 9165. 556t 1B115160. 335IS15/645.财32H0. 9075. 9535, 7110.212L 7755, 3

35、61 15. 2390. 1255. 36 15. 1895. 953t 8735. 1730. 3191/46, 35100. 6356, 356. 190. 165, 5255. 9385, 82th1185, 9386.0566, 355, 5915. 830. 236201/46. 35280. 9076. 356. 1260.2215. 1725. 7fil5. 6290. 1325. 7615. 893& 355.275. 5850.315211/1& 35211,058百，356.1110.2364, 975. 6fi3 i5. 5230. 145-6635, 8

36、036, 365*095, 1250, 335221/4& 35201.276. 356 10, 254.7X 525 ；b. 3750.lb£ 5255, 675& 354, 88宝1930. 3553级精度螺纹的极限尺f及公差序公称ft径斑英外螺纹内螺纹寸牙人彳釧小彳彳dl川径d2屮询K大衿D水径m£D数PfiP卜1公葢虽大虽大1add任1fii 小 1 fiA1小1戲大1公2£号inmznnmm2317/61& 717320. 794& 7476. 5350.2125.7166, 2316. 1060. 11256. 2316

37、, 3566.7475. 8026. 1020.3219/盟7. in289077. Hl6. 020. 221反P L L Lb. 0336. m(h 1326. 555& 6S77J 446. 0646. 3790.315259/327* m201*277. Hl6. 8910,255. 1916.3196. 1690.156,319& 1697J115, 6325. 9870. 355265/ le化93828a 9077.7.7110. 221& 767, 3197. 2170* 1327. 3197. 181工9386. 8587. 1730. 315275/

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39、28a 9079. 5259. 3010. 221& 317& 9：怕8. 801a 1132&做9 0689. 5258. 11& 760.315313/89. 525RL 1119丄 525匕药0. 2657,692& 6朋R. 44«0.16生 6)a& TfiS9.5257. H15& 22375323/89. 52516L 5889. 5259. 2b0. 2657. 463& 1918. 3310.16& 4918. 6519.5257. 6358,01tk 375337/16It 112280. 907lb 11210. 8760.2360 93110. 523103830.1110. 52810.6631K 11216 03210. 3670. 335317/16IL 112WL 588Ik 11210.媲0-2K出0510. 出】9. 911a171(X购W. 25111. 1129. 222