美制螺紋速查表

1、美制螺紋對照表序號公稱直徑牙數(shù)系列代號2A外螺紋2B內(nèi)螺紋大徑（最大）小徑（最小） 小徑（最大） 小徑（最?。?1-64UNC1.85421.42461.6162451.424621-72UNF1.85421.47231.6398651.472332-56UNC2.18441.69341.8875821.693442-64UNF2.18441.75481.9217901.754853-48UNC2.51461.94182.1474701.941863-56UNF2.51462.02362.1970062.023674-40UNC2.84482.15742.3852652.157484-48UN

2、F2.84482.27202.4590572.272095-40UNC3.17502.48762.6977762.4876105-44UNF3.17502.55012.7397282.5501116-32UNC3.50522.64592.8936952.6459126-40UNF3.50522.81783.0136192.8178138-32UNC4.16563.30633.5267393.3063148-36UNF4.16563.40183.5965633.40181510-24UNC4.82603.68033.9492643.68031610-32UNF4.82603.96674.1672

3、693.96671712-24UNC5.48644.34074.5895494.34071812-28UNF5.48644.50444.7173124.50441912-32UNEF5.48644.62714.8125834.6271201/4-20UNC6.35004.97525.2672854.9752211/4-28UNF6.35005.36805.5818165.3680221/4-32UNEF6.35005.49075.6792565.4907235/16-18UNC7.93756.40996.7313476.4099245/16-20UN7.93756.56276.8547856.

4、5627255/16-24UNF7.93756.79187.0387656.7918265/16-28UN7.93756.95557.1693166.9555275/16-32UNEF7.93757.07827.2667567.0782283/8-16UNC9.52507.80658.1636687.8065293/8-20UN9.52508.15028.4422858.1502303/8-24UNF9.52508.37938.6262658.3793313/8-28UN9.52508.54308.7568168.5430323/8-32UNEF9.52508.66578.8542568.66

5、57337/16-14UNC11.11259.14859.5502139.1485347/16-16UN11.11259.39409.7511689.3940357/16-20UNF11.11259.737710.0297859.7377367/16-28UNEF11.112510.130510.34431610.1305377/16-32UN11.112510.253210.44175610.2532381/2-13UNC12.700010.584911.01324310.5849391/2-16UN12.700010.981511.33866810.9815401/2-20UNF12.70

6、0011.325211.61728511.3252411/2-28UNEF12.700011.718011.93181611.7180421/2-32UN12.700011.840712.02925611.8407439/16-12UNC14.287511.996112.45475211.9961449/16-16UN14.287512.569012.92616812.5690459/16-18UNF14.287512.759913.08134712.7599469/16-20UN14.287512.912713.20478512.9127479/16-24UNEF14.287513.1418

7、13.38876513.1418489/16-28UN14.287513.305513.51931613.3055499/16-32UN14.287513.428213.61675613.4282505/8-11UNC15.875013.375313.86864213.3753515/8-12UN15.875013.583614.04225213.5836525/8-16UN15.875014.156514.51366814.1565535/8-18UNF15.875014.347414.66884714.3474545/8-20UN15.875014.500214.79228514.5002

8、555/8-24UNEF15.875014.729314.97626514.7293565/8-28UN15.875014.893015.10681614.8930575/8-32UN15.875015.015715.20425615.01575811/16-12UN17.462515.171115.62975215.17115911/16-16UN17.462515.744016.10116815.74406011/16-20UN17.462516.087716.37978516.08776111/16-24 UNEF17.462516.316816.56376516.31686211/16

9、-28UN17.462516.480516.69431616.48056311/16-32UN17.462516.603216.79175616.6032643/4-10UNC19.050016.300416.83376916.3004653/4-12UN19.050016.758617.21725216.7586663/4-16UNF19.050017.331517.68866817.3315673/4-20UNEF19.050017.675217.96728517.6752683/4-28UN19.050018.068018.28181618.0680693/4-32UN19.050018

10、.190718.37925618.19077013/16-12UN20.637518.346118.80475218.34617113/16-16UN20.637518.919019.27616818.91907213/16-20 UNEF20.637519.262719.55478519.26277313/16-28UN20.637519.655519.86931619.65557413/16-32UN20.637519.778219.96675619.7782757/8-9UNC22.225019.169919.74997819.1699767/8-12UN22.225019.933620

11、.39225219.9336777/8-14UNF22.225020.261020.66271320.2610787/8-16UN22.225020.506520.86366820.5065797/8-20UNEF22.225020.850221.14228520.8502807/8-28UN22.225021.243021.45681621.2430817/8-32UN22.225021.365721.55425621.36578215/16-12UN23.812521.521121.97975221.52118315/16-16UN23.812522.094022.45116822.094

12、08415/16-20 UNEF23.812522.437722.72978522.43778515/16-28UN23.812522.830523.04431622.83058615/16-32UN23.812522.953223.14175622.9532871-8UNC25.400021.963022.59796221.9630881-12UNF25.400023.108623.56725223.1086891-16UN25.400023.681524.03866823.6815901-20UNEF25.400024.025224.31728524.0252911-28UN25.4000

13、24.418024.63181624.4180921-32UN25.400024.540724.72925624.54079311/16-8UN26.987523.550524.18546223.55059411/16-12UN26.987524.696125.15475224.69619511/16-16UN26.987525.269025.62616825.26909611/16-18 UNEF26.987525.459925.78134725.45999711/16-20UN26.987525.612725.90478525.61279811/16-28UN26.987526.00552

14、6.21931626.0055991-1/8-7UNC28.575024.647025.34675224.64701001-1/8-8UN28.575025.138025.77296225.13801011-1/8-12 UNF28.575026.283626.74225226.28361021-1/8-16UN28.575026.856527.21366826.85651031-1/8-18 UNEF28.575027.047427.36884727.04741041-1/8-20UN28.575027.200227.49228527.20021051-1/8-28UN28.575027.5

15、93027.80681627.593010613/16-8UN30.162526.725527.36046226.725510713/16-12UN30.162527.871128.32975227.871110813/16-16UN30.162528.444028.80116828.444010913/16-18 UNEF30.162528.634928.95634728.634911013/16-20UN30.162528.787729.07978528.787711113/16-28UN30.162529.180529.39431629.18051121-1/4-7UNC31.75002

16、7.822028.52175227.82201131-1/4-8UN31.750028.313028.94796228.31301141-1/4-12 UNF31.750029.458629.91725229.45861151-1/4-16UN31.750030.031530.38866830.03151161-1/4-18 UNEF31.750030.222430.54384730.22241171-1/4-20UN31.750030.375230.66728530.37521181-1/4-28UN31.750030.768030.98181630.768011915/16-8UN33.3

17、37529.900530.53546229.900512015/16-12UN33.337531.046131.50475231.046112115/16-16UN33.337531.619031.97616831.619012215/16-18 UNEF33.337531.809932.13134731.809912315/16-20UN33.337531.962732.25478531.962712415/16-28UN33.337532.355532.56931632.35551251-3/8-6UNC34.925030.342331.11839330.34231261-3/8-8UN3

18、4.925031.488032.12296231.48801271-3/8-12 UNF34.925032.633633.09225232.63361281-3/8-16UN34.925033.206533.56366833.20651291-3/8-18 UNEF34.925033.397433.71884733.39741301-3/8-20UN34.925033.550233.84228533.55021311-3/8-28UN34.925033.943034.15681633.94301321-7/16-6UN36.512531.929832.70589331.92981331-7/1

19、6-8UN36.512533.075533.71046233.07551341-7/16-12 UN36.512534.221134.67975234.22111351-7/16-16 UN36.512534.794035.15116834.79401361-7/16-18UNEF36.512534.984935.30634734.98491371-7/16-20 UN36.512535.137735.42978535.13771381-7/16-28 UN36.512535.530535.74431635.53051391-1/2-6UNC38.100033.517334.29339333.

20、51731401-1/2-8UN38.100034.663035.29796234.66301411-1/2-12 UNF38.100035.808636.26725235.80861421-1/2-16UN38.100036.381536.73866836.38151431-1/2-18 UNEF38.100036.572436.89384736.57241441-1/2-20UN38.100036.725237.01728536.72521451-1/2-28UN38.100037.118037.33181637.11801461-9/16-6UN39.687535.104835.8808

21、9335.10481471-9/16-8UN39.687536.250536.88546236.25051481-9/16-12 UN39.687537.396137.85475237.39611491-9/16-16 UN39.687537.969038.32616837.96901501-9/16-18UNEF39.687538.159938.48134738.15991511-9/16-20 UN39.687538.312738.60478538.31271521-5/8-6UN41.275036.692337.46839336.69231531-5/8-8UN41.275037.838

22、038.47296237.83801541-5/8-12UN41.275038.983639.44225238.98361551-5/8-16UN41.275039.556539.91366839.55651561-5/8-18 UNEF41.275039.747440.06884739.74741571-5/8-20UN41.275039.900240.19228539.90021581-11/16-6 UN42.862538.279839.05589338.27981591-11/16-8 UN42.862539.425540.06046239.42551601-11/16-12UN42.

23、862540.571141.02975240.57111611-11/16-16UN42.862541.144041.50116841.14401621-11/16-18 UNEF42.862541.334941.65634741.33491631-11/16-20UN42.862541.487741.77978541.48771641-3/4-5UNC44.450038.950739.81433938.95071651-3/4-6UN44.450039.867340.64339339.86731661-3/4-8UN44.450041.013041.64796241.01301671-3/4

24、-12UN44.450042.158642.61725242.15861681-3/4-16UN44.450042.731543.08866842.73151691-3/4-20UN44.450043.075243.36728543.07521701-13/16-6 UN46.037541.454842.23089341.45481711-13/16-8 UN46.037542.600543.23546242.60051721-13/16-12UN46.037543.746144.20475243.74611731-13/16-16UN46.037544.319044.67616844.319

25、01741-13/16-20UN46.037544.662744.95478544.66271751-7/8-6UN47.625043.042343.81839343.04231761-7/8-8UN47.625044.188044.82296244.18801771-7/8-12UN47.625045.333645.79225245.33361781-7/8-16UN47.625045.906546.26366845.90651791-7/8-20UN47.625046.250246.54228546.25021801-15/16-6 UN49.212544.629845.40589344.

26、62981811-15/16-8 UN49.212545.775546.41046245.77551821-15/16-12UN49.212546.921147.37975246.92111831-15/16-16UN49.212547.494047.85116847.49401841-15/16-20UN49.212547.837748.12978547.83771852-4.5UNC50.800044.689745.59909244.68971862-6UN50.800046.217346.99339346.21731872-8UN50.800047.363047.99796247.363

27、01882-12UN50.800048.508648.96725248.50861892-16UN50.800049.081549.43866849.08151902-20UN50.800049.425249.71728549.42521912-1/8-6UN53.975049.392350.16839349.39231922-1/8-8UN53.975050.538051.17296250.53801932-1/8-12UN53.975051.683652.14225251.68361942-1/8-16UN53.975052.256552.61366852.25651952-1/8-20U

28、N53.975052.600252.89228552.60021962-1/4-4.5UNC57.150051.039751.94909251.03971972-1/4-6UN57.150052.567353.34339352.56731982-1/4-8UN57.150053.713054.34796253.71301992-1/4-12UN57.150054.858655.31725254.85862002-1/4-16UN57.150055.431555.78866855.43152012-1/4-20UN57.150055.775256.06728555.77522022-3/8-6U

29、N60.325055.742356.51839355.74232032-3/8-8UN60.325056.888057.52296256.88802042-3/8-12UN60.325058.033658.49225258.03362052-3/8-16UN60.325058.606558.96366858.60652062-3/8-20UN60.325058.950259.24228558.95022072-1/2-4UNC63.500056.625957.57842356.62592082-1/2-6UN63.500058.917359.69339358.91732092-1/2-8UN6

30、3.500060.063060.69796260.06302102-1/2-12UN63.500061.208661.66725261.20862112-1/2-16UN63.500061.781562.13866861.78152122-1/2-20UN63.500062.125262.41728562.12522132-5/8-4UN66.675059.800960.75342359.80092142-5/8-6UN66.675062.092362.86839362.09232152-5/8-8UN66.675063.238063.87296263.23802162-5/8-12UN66.

31、675064.383664.84225264.38362172-5/8-16UN66.675064.956565.31366864.95652182-5/8-20UN66.675065.300265.59228565.30022192-3/4-4UNC69.850062.975963.92842362.97592202-3/4-6UN69.850065.267366.04339365.26732212-3/4-8UN69.850066.413067.04796266.41302222-3/4-12UN69.850067.558668.01725267.55862232-3/4-16UN69.8

32、50068.131568.48866868.13152242-3/4-20UN69.850068.475268.76728568.47522252-7/8-4UN73.025066.150967.10342366.15092262-7/8-6UN73.025068.442369.21839368.44232272-7/8-8UN73.025069.588070.22296269.58802282-7/8-16UN73.025070.733671.19225270.73362292-7/8-16UN73.025071.306571.66366871.30652302-7/8-20UN73.025

33、071.650271.94228571.65022313-4UNC76.200069.325970.27842369.32592323-6UN76.200071.617372.39339371.61732333-8UN76.200072.763073.39796272.76302343-12UN76.200073.908674.36725273.90862353-16UN76.200074.481574.83866874.48152363-20UN76.200074.825275.11728574.82522373-1/8-4UN79.375072.500973.45342372.500923

34、83-1/8-6UN79.375074.792375.56839374.79232393-1/8-8UN79.375075.938076.57296275.93802403-1/8-12UN79.375077.083677.54225277.08362413-1/8-16UN79.375077.656578.01366877.65652423-1/4-4UNC82.550075.675976.62842375.67592433-1/4-6UN82.550077.967378.74339377.96732443-1/4-8UN82.550079.113079.74796279.11302453-

35、1/4-12UN82.550080.258680.71725280.25862463-1/4-16UN82.550080.831581.18866880.83152473-3/8-4UN85.725078.850979.80342378.85092483-3/8-6UN85.725081.142381.91839381.14232493-3/8-8UN85.725082.288082.92296282.28802503-3/8-12UN85.725083.433683.89225283.43362513-3/8-16UN85.725084.006584.36366884.00652523-1/

36、2-4UNC88.900082.025982.97842382.02592533-1/2-6UN88.900084.317385.09339384.31732543-1/2-8UN88.900085.463086.09796285.46302553-1/2-12UN88.900086.608687.06725286.60862563-1/2-16UN88.900087.181587.53866887.18152573-5/8-4UN92.075085.200986.15342385.20092583-5/8-6UN92.075087.492388.26839387.49232593-5/8-8

37、UN92.075088.638089.27296288.63802603-5/8-12UN92.075089.783690.24225289.78362613-5/8-16UN92.075090.356590.71366890.35652623-3/4-4UNC95.250088.375989.32842388.37592633-3/4-6UN95.250090.667391.44339390.66732643-3/4-8UN95.250091.813092.44796291.81302653-3/4-12UN95.250092.958693.41725292.95862663-3/4-16U

38、N95.250093.531593.88866893.53152673-7/8-4UN98.425091.550992.50342391.55092683-7/8-6UN98.425093.842394.61839393.84232693-7/8-8UN98.425094.988095.62296294.98802703-7/8-12UN98.425096.133696.59225296.13362713-7/8-16UN98.425096.706597.06366896.70652724-4UNC101.600094.725995.67842394.72592734-6UN101.60009

39、7.017397.79339397.01732744-8UN101.600098.163098.79796298.16302754-12UN101.600099.308699.76725299.30862764-16UN101.600099.8815100.23866899.88152774-1/8-4UN104.775097.900998.85342397.90092784-1/8-6UN104.7750100.1923100.968393100.19232794-1/8-8UN104.7750101.3380101.972962101.33802804-1/8-12UN104.775010

40、2.4836102.942252102.48362814-1/8-16UN104.7750103.0565103.413668103.05652824-1/4-4UN107.9500101.0759102.028423101.07592834-1/4-6UN107.9500103.3673104.143393103.36732844-1/4-8UN107.9500104.5130105.147962104.51302854-1/4-12UN107.9500105.6586106.117252105.65862864-1/4-16UN107.9500106.2315106.588668106.2

41、3152874-3/8-4UN111.1250104.2509105.203423104.25092884-3/8-6UN111.1250106.5423107.318393106.54232894-3/8-8UN111.1250107.6880108.322962107.68802904-3/8-12UN111.1250108.8336109.292252108.83362914-3/8-16UN111.1250109.4065109.763668109.40652924-1/2-4UN114.3000107.4259108.378423107.42592934-1/2-6UN114.300

42、0109.7173110.493393109.71732944-1/2-8UN114.3000110.8630111.497962110.86302954-1/2-12UN114.3000112.0086112.467252112.00862964-1/2-16UN114.3000112.5815112.938668112.58152974-5/8-4UN117.4750110.6009111.553423110.60092984-5/8-6UN117.4750112.8923113.668393112.89232994-5/8-8UN117.4750114.0380114.672962114

43、.03803004-5/8-12UN117.4750115.1836115.642252115.18363014-5/8-16UN117.4750115.7565116.113668115.75653024-3/4-4UN120.6500113.7759114.728423113.77593034-3/4-6UN120.6500116.0673116.843393116.06733044-3/4-8UN120.6500117.2130117.847962117.21303054-3/4-12UN120.6500118.3586118.817252118.35863064-3/4-16UN120

44、.6500118.9315119.288668118.93153074-7/8-4UN123.8250116.9509117.903423116.95093084-7/8-6UN123.8250119.2423120.018393119.24233094-7/8-8UN123.8250120.3880121.022962120.38803104-7/8-12UN123.8250121.5336121.992252121.53363114-7/8-16UN123.8250122.1065122.463668122.10653125-4UN127.0000120.1259121.078423120

45、.12593135-6UN127.0000122.4173123.193393122.41733145-8UN127.0000123.5630124.197962123.56303155-12UN127.0000124.7086125.167252124.70863165-16UN127.0000125.2815125.638668125.28153175-1/8-4UN130.1750123.3009124.253423123.30093185-1/8-6UN130.1750125.5923126.368393125.59233195-1/8-8UN130.1750126.7380127.372962126.73803205-1/8-12UN130.1750127.8836128.342252127.88363215-1/8-16UN130.1750128.4565128.813668128.45653225-1/4-4UN133.3500126.4759127.428423126.47593235-1/4-6UN133.3500128.7673129.54339