Hoja10-80 UNF to -56 UNSNominal thread sizes from 0-80 UNF to -56 UNS5/16-18 UNC to 9/16 -32 UNNominal thread sizes from 5/16-18 UNC to 9/16 -32 UN5/8-11 UNC to 7/8-32 UNNominal thread sizes from 5/8-11 UNC to 7/8-32 UN15/16-12 UN to 1 3/16-28 UNNominal thread sizes from 15/16-12 UN to 1 3/16-28 UN1 1/4-7 UNC to 1 9/16-20 UNNominal thread sizes from 1 1/4-7 UNC to 1 9/16-20 UN1 5/8-6 UN to 1 15/16-20 UNNominal thread sizes from 1 5/8-6 UN to 1 15/16-20 UN2-4 UNC to 2-20 UNNominal thread sizes from 2-4 UNC to 2-20 UN2 7/8-6 UN to 4-16 UNNominal thread sizes from 2 7/8-6 UN to 4-16 UN

External Thread /Internal ThreadExternal Thread /Internal ThreadExternal Thread /Internal ThreadExternal Thread /Internal ThreadExternal Thread /Internal ThreadExternal Thread /Internal ThreadExternal Thread /Internal ThreadNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaNominal Size, TPI, SeriesClassAllowanceMaxaMajorMin MajorMinbMaxaPitchMin PitchUNRcMinor DiaMax MinorMin MinorMajor Dia(Min)Max MinorMin MinorMajor Dia(Min)Max MinorMin MinorMajor Dia(Min)Max MinorMin MinorMajor Dia(Min)Max 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UNC2A0.00190.87310.85920.85230.80090.79460.7408Ext.11/8-28 UN3A01.1251.1185-1.10181.09881.0824Ext.17/16-20 UN3A01.43751.4294-1.4051.40141.378Ext.17/8-16 UN2A0.00161.87341.864-1.83281.82751.7989Ext.21/2-4 UNC2A0.00312.49692.47312.46122.33452.32412.1992Int.2B0.2320.2270.24010.23650.25Int.2B0.4690.460.48070.47590.5Int.2B0.7780.7550.8110.80280.875Int.3B1.09261.0861.10571.10181.125Int.3B1.39121.3831.40961.4051.4375Int.2B1.8211.8071.84131.83441.875Int.2B2.2672.2292.35112.33762.5Ext.1/4-56 UNS2A0.00080.24920.2451-0.23760.2350.228Ext.1/2-28 UNEF2A0.00110.49890.4924-0.47570.4720.4563Ext.7/8-9 UNC3A00.8750.8611-0.80280.79810.7427Ext.13/16-8 UN2A0.00211.18541.1704-1.10421.09721.0366Ext.17/16-28 UN2A0.00131.43621.4297-1.4131.40881.3936Ext.17/8-16 UN3A01.8751.8656-1.83441.83041.8005Ext.21/2-4 UNC3A02.52.4762-2.33762.32982.2023Int.2B0.2350.2310.24170.23840.25Int.2B0.470.4610.48160.47680.5Int.3B0.76810.7550.80890.80280.875Int.2B1.0771.0521.11541.10631.1875Int.2B1.4071.3991.41981.41431.4375Int.3B1.81581.8071.83961.83441.875Int.3B2.25942.2292.34772.33762.5aFor Class 2A threads with coating (plating) the max. is increased by the allowance, to the basic size. This is the same value as Class 3A.Ext.1/2-28 UNEF3A00.50.4935-0.47680.4740.4574Ext.7/8-10 UNS2A0.00180.87320.8603-0.80820.80220.7542Ext.13/16-8 UN3A01.18751.1725-1.10631.10111.0387Ext.17/16-28 UN3A01.43751.431-1.41431.41121.3949Ext.17/8-18 UNS2A0.00151.87351.8648-1.83741.83231.8074Ext.21/2-6 UN2A0.00272.49732.4791-2.3892.382.2989bFor uncoated hot-rolled, but not standard fasteners with cold rolled threadsInt.3B0.46760.4610.48040.47680.5Int.2B0.7880.7670.81780.810.875Int.3B1.06721.0521.11311.10631.1875Int.3B1.40511.3991.41841.41431.4375Int.2B1.8281.8151.84551.83891.875Int.2B2.352.322.40332.39172.5cUN series external thread, Max.Diameter=Basic - Allowance, for Class 1A and 2AExt.1/2-32 UN2A0.0010.4990.493-0.47870.47520.4618Ext.7/8-12 UN2A0.00170.87330.8619-0.81920.81370.7741Ext.13/16-12 UN2A1.00171.18581.1744-1.13171.12591.0866Ext.11/2-6 UNC1A0.00241.49761.4703-1.38931.37721.2992Ext.17/8-20 UN2A0.00151.87351.8654-1.8411.83621.814Ext.21/2-6 UN3A02.52.4818-2.39172.3852.3016=Basic for Class 3AInt.2B0.4740.4660.48420.47970.5Int.2B0.8030.7850.82810.82090.875Int.2B1.1151.0971.14091.13341.1875Int.1B1.351.321.40751.39171.5Int.2B1.8321.8211.84881.84251.875Int.3B2.33962.322.40042.39172.5Ext.1/2-32 UN3A00.50.494-0.47970.47710.4628Ext.7/8-12 UN3A00.8750.8636-0.82090.81680.7758Ext.13/16-12 UN3A01.18721.1761-1.13341.12911.0883Ext.11/2-6 UNC2A0.00241.49761.47941.47031.38931.38121.2992Ext.17/8-20 UN3A01.8751.8669-1.84251.83891.8155Ext.21/2-8 UN2A0.00242.49762.48262.47512.41642.40822.3488Int.3B0.47190.4660.48310.47970.5Int.3B0.79480.7850.82630.82090.875Int.3B1.10731.0971.1391.13341.1875Int.2B1.351.321.40221.39171.5Int.3B1.82871.8211.84721.84251.875Int.2B2.392.3652.42942.41882.5Ext.9/16-12 UNC1A0.00160.56090.5437-0.50680.4990.4617Ext.7/8-14 UNF1A0.00160.87340.8579-0.8270.81890.7884Ext.13/16-16 UN2A0.00151.1861.1766-1.14541.14031.1115Ext.11/2-6 UNC3A01.51.4818-1.39171.38561.3016Ext.115/16-6 UN2A0.00261.93491.9167-1.82661.81811.7365Ext.21/2-8 UN3A02.52.485-2.41882.41272.3512Int.1B0.490.4720.51860.50840.5625Int.1B0.8140.7980.83920.82860.875Int.2B1.1341.121.15351.14691.1875Int.3B1.33961.321.39961.39171.5Int.2B1.7881.7571.84031.82921.9375Int.3B2.37972.3652.42682.41882.5Ext.9/16-12 UNC2A0.00160.56090.54950.54370.50680.50160.4617Ext.7/8-14 UNF2A0.00160.87340.8631-0.8270.82160.7884Ext.13/16-16 UN3A01.18751.1781-1.14691.14311.113Ext.11/2-8 UN2A0.00221.49781.48281.47531.41661.40931.349Ext.115/16-6 UN3A01.93751.9193-1.82921.82281.7391Ext.21/2-10 UNS2A0.0022.4982.4851-2.4332.42632.379Int.2B0.490.4720.51520.50840.5625Int.2B0.8140.7980.83560.82860.875Int.3B1.12831.121.15191.14691.1875Int.2B1.391.3651.42831.41881.5Int.3B1.77711.7571.83751.82921.9375Int.2B2.4132.3922.44372.4352.5Ext.9/16-12 UNC3A00.56250.5511-0.50840.50450.4633Ext.7/8-14 UNF3A00.8750.8647-0.82860.82450.79Ext.13/16-18 UNEF2A0.00151.1861.1773-1.14991.1451.1199Ext.11/2-8 UN3A01.51.485-1.41881.41331.3512Ext.115/16-8 UN2A0.00231.93521.9202-1.8541.84631.7864Ext.21/2-12 UN2A0.00192.49812.4867-2.4442.43782.3989Int.3B0.48430.4720.51350.50840.5625Int.3B0.80680.7980.83390.82860.875Int.2B1.141.1271.15771.15141.1875Int.3B1.37971.3651.42591.41881.5Int.2B1.8271.8021.86631.85631.9375Int.2B2.4282.412.4542.44592.5Ext.9/16-14 UNS2A0.00150.5610.5507-0.51460.50960.476Ext.7/8-16 UN2A0.00150.87350.8641-0.83290.8280.79Ext.13/16-18 UNEF3A01.18751.1788-1.15141.14781.1214Ext.11/2-10 UNS2A0.00191.49811.4852-1.43311.42671.3791Ext.115/16-8 UN3A01.93751.9225-1.85631.85051.7887Ext.21/2-12 UN3A02.52.4886-2.44592.44132.4008Int.2B0.5010.4850.52260.51610.5625Int.2B0.8210.8070.84070.83440.875Int.3B1.13551.1271.15611.15141.1875Int.2B1.4131.3921.44331.4351.5Int.3B1.81721.8021.86381.85631.9375Int.3B2.41982.412.45192.44592.5Ext.9/16-16 UN2A0.00140.56110.5517-0.52050.51580.4866Ext.7/8-16 UN3A00.8750.8656-0.83440.83080.8005Ext.13/16-20 UN2A0.00141.18611.178-1.15361.14891.1266Ext.11/2-12 UNF1A0.00191.49811.4809-1.4441.43441.3989Ext.115/16-12 UN2A0.00181.93571.9243-1.88161.87551.8365Ext.21/2-14 UNS2A0.00172.49832.488-2.45192.44612.4133Int.2B0.5090.4950.5280.52190.5625Int.3B0.81580.8070.83910.83440.875Int.2B1.1451.1331.16111.1551.1875Int.1B1.4281.411.45841.44591.5Int.2B1.8651.8471.89131.88341.9375Int.2B2.4382.4232.46122.45362.5Ext.9/16-16 UN3A00.56250.5531-0.52190.51840.488Ext.7/8-18 UNS2A0.00140.87360.8649-0.83750.83290.8075Ext.13/16-20 UN3A01.18751.1794-1.1551.15151.128Ext.11/2-12 UNF2A0.00191.49811.4867-1.4441.43761.3989Ext.115/16-12 UN3A01.93751.9261-1.88341.87891.8383Ext.21/2-16 UN2A0.00172.49832.4889-2.45772.45222.4238Int.3B0.5040.4950.52650.52190.5625Int.2B0.8280.8150.84490.83890.875Int.3B1.14121.1331.15951.1551.1875Int.2B1.4281.411.45421.44591.5Int.3B1.85731.8471.88931.88341.9375Int.2B2.4462.4322.46662.45942.5Ext.9/16-18 UNF1A0.00140.56110.548-0.5250.51820.495Ext.7/8-20 UNEF2A0.00130.87370.8656-0.84120.83680.8142Ext.13/16-28 UN2A0.00121.18631.1798-1.16311.1591.1437Ext.11/2-12 UNF3A01.51.4886-1.44591.44111.4008Ext.115/16-16 UN2A0.00161.93591.9265-1.89531.88991.8614Ext.21/2-16 UN3A02.52.4906-2.45942.45532.4255Int.1B0.5150.5020.53530.52640.5625Int.2B0.8320.8210.84820.84250.875Int.2B1.1571.1491.16961.16431.1875Int.3B1.41981.411.45221.44591.5Int.2B1.8841.871.90391.89691.9375Int.3B2.44082.4322.46482.45942.5Ext.9/16-18 UNF2A0.00140.56110.5524-0.5250.52050.495Ext.7/8-20 UNEF3A00.8750.8669-0.84250.83920.8155Ext.13/16-28 UN3A01.18751.181-1.16431.16121.1449Ext.11/2-14 UNS2A0.00171.49831.488-1.45191.44641.4133Ext.115/16-16 UN3A01.93751.9281-1.89691.89291.863Ext.21/2-18 UNS2A0.00162.49842.4897-2.46232.4572.4323Int.2B0.5150.5020.53230.52640.5625Int.3B0.82870.8210.84680.84250.875Int.3B1.15511.1491.16831.16431.1875Int.2B1.4381.4231.46081.45361.5Int.3B1.87831.871.90211.89691.9375Int.2B2.4532.442.47082.46392.5Ext.9/16-18 UNF3A00.56250.5538-0.52640.5230.4964Ext.7/8-24 UNS2A0.00120.87380.8666-0.84670.84260.8242Ext.11/2-16 UN2A0.00161.49841.489-1.45781.45261.4239Ext.115/16-20 UN2A0.00151.9361.9279-1.90351.89861.8765Ext.21/2-20 UN2A0.00152.49852.4904-2.4662.46092.439Int.3B0.51060.5020.53080.52640.5625Int.2B0.840.830.85320.84790.875Int.2B1.4461.4321.46621.45941.5Int.2B1.8951.8831.91141.9051.9375Int.2B2.4572.4462.47412.46752.5Ext.9/16-20 UN2A0.00130.56120.5531-0.52870.52450.5017Ext.7/8-27 UNS2A0.00120.87380.8671-0.84970.84580.8297Ext.11/2-16 UN3A01.51.4906-1.45941.45551.4255Ext.115/16-20 UN3A01.93751.9294-1.9051.90131.878Ext.21/2-20 UN3A02.52.4919-2.46752.46372.4405Int.2B0.520.5080.53550.530.5625Int.2B0.8440.8350.8560.85090.875Int.3B1.44081.4321.46451.45941.5Int.3B1.89121.8831.90981.9051.9375Int.3B2.45372.4462.47252.46752.5Ext.9/16-20 UN3A00.56250.5544-0.530.52680.503Ext.7/8-28 UN2A0.00120.87380.8673-0.85060.84680.8312Ext.11/2-18 UNEF2A0.00151.49851.4898-1.46241.45741.4324Ext.25/8-6 UN2A0.00272.62232.6041-2.5142.5052.4239Int.3B0.51620.5080.53410.530.5625Int.2B0.8450.8360.85680.85180.875Int.2B1.4521.441.47041.46391.5Int.2B2.4752.4452.52852.51672.625Ext.9/16-24 UNEF2A0.00120.56130.5541-0.53420.53030.5117Ext.7/8-28 UN3A00.8750.8685-0.85180.84890.8324Ext.11/2-18 UNEF3A01.51.4913-1.46391.46021.4339Ext.25/8-6 UN3A02.6252.6068-2.51672.50992.4266Int.2B0.5270.5170.54050.53540.5625Int.3B0.84260.8360.85550.85180.875Int.3B1.4481.441.46871.46391.5Int.3B2.46462.4452.52552.51672.625Ext.9/16-24 UNEF3A00.56250.5553-0.53540.53250.5129Ext.7/8-32 UN2A0.00110.87390.8679-0.85360.850.8367Ext.11/2-20 UN2A0.00141.49861.4905-1.46611.46131.4391Ext.25/8-8 UN2A0.00252.62252.6075-2.54132.53312.4737Int.3B0.52440.5170.53920.53540.5625Int.2B0.8490.8410.85940.85470.875Int.2B1.4571.4461.47371.46751.5Int.2B2.5152.492.55452.54382.625Ext.9/16-27 UNS2A0.00110.56140.5547-0.53730.53360.5173Ext.7/8-32 UN3A00.8750.869-0.85470.8520.8378Ext.11/2-20 UN3A01.51.4919-1.46751.46391.4405Ext.25/8-8 UN3A02.6252.61-2.54382.53762.4762Int.2B0.5310.5220.54320.53840.5625Int.3B0.84690.8410.85830.85470.875Int.3B1.45371.4461.47211.46751.5Int.3B2.50472.492.55182.54382.625Ext.9/16-28 UN2A0.00110.56140.5549-0.53820.53450.5188Ext.11/2-24 UNS2A0.00131.49871.4915-1.47161.46721.4991Ext.25/8-12 UN2A0.00192.62312.6117-2.5692.56282.5239Int.2B0.5320.5240.54410.53930.5625Int.2B1.4651.4551.47871.47291.5Int.2B2.5532.5352.5792.57092.625Ext.9/16-28 UN3A00.56250.556-0.53930.53650.5199Ext.11/2-28 UN2A0.00131.49871.4922-1.47551.47131.4561Ext.25/8-12 UN3A02.6252.6136-2.57092.56632.5258Int.3B0.53010.5240.54290.53930.5625Int.2B1.471.4611.48231.47681.5Int.3B2.54482.5352.57692.57092.625Ext.9/16-32 UN2A0.0010.56150.5555-0.54120.53770.5243Ext.11/2-28 UN3A01.51.4935-1.47681.47371.4574Ext.25/8-16 UN2A0.00172.62332.6139-2.58272.57722.5488Int.2B0.5360.5290.54670.54220.5625Int.3B4.46761.4611.48091.47681.5Int.2B2.5712.5572.59162.58442.625Ext.9/16-32 UN3A00.56250.5565-0.54220.53960.5253Ext.19/16-6 UN2A0.00241.56011.5419-1.45181.44361.3617Ext.25/8-16 UN3A02.6252.6156-2.58442.58032.5505Int.3B0.53440.5290.54560.54220.5625Int.2B1.4131.3821.46481.45421.5625Int.3B2.56582.5572.58982.58442.625Ext.19/16-6 UN3A01.56251.5443-1.45421.44811.3641Ext.25/8-20 UN2A0.00152.62352.6154-2.5912.58592.564Int.3B1.40211.3821.46221.45421.5625Int.2B2.5822.5712.59912.59252.625Ext.19/16-8 UN2A0.00221.56031.5453-1.47911.47171.4115Ext.25/8-20 UN3A02.6252.6169-2.59252.58872.5655Int.2B1.4521.4271.49091.48131.5625Int.3B2.57872.5712.59752.59252.625Ext.19/16-8 UN3A01.56251.5475-1.48131.47581.4137Ext.23/4-4 UNC1A0.00322.74682.7111-2.58442.56862.4491Int.3B1.44221.4271.48851.48131.5625Int.1B2.5172.4792.60822.58762.75Ext.19/16-12 UN2A0.00181.56071.5493-1.50661.50071.4615Ext.23/4-4 UNC2A0.00322.74682.7232.71112.58442.57392.4491Int.2B1.491.4721.5161.50841.5625Int.2B2.5172.4792.60132.58762.75Ext.19/16-12 UN3A01.56251.5511-1.50841.5041.4633Ext.23/4-4 UNC3A02.752.7262-2.58762.57972.4523Int.3B1.48231.4721.51411.50841.5625Int.3B2.50942.4792.59792.58762.75Ext.19/16-16 UN2A0.00161.56091.5515-1.52031.51511.4864Ext.23/4-6 UN2A0.00272.74732.7291-2.6392.62992.5489Int.2B1.5091.4951.52871.52191.5625Int.2B2.62.572.65362.64172.75Ext.19/16-16 UN3A01.56251.5531-1.52191.5181.488Ext.23/4-6 UN3A02.752.7318-2.64172.63492.5516Int.3B1.50331.4951.5271.52191.5625Int.3B2.58962.572.65062.64172.75Ext.19/16-18 UNEF2A0.00151.5611.5523-1.52491.51991.4949Ext.23/4-8 UN2A0.00252.74752.73252.7252.66632.6582.5987Int.2B1.5151.5021.53291.52641.5625Int.2B2.642.6152.67962.66882.75Ext.19/16-18 UNEF3A01.56251.5538-1.52641.52271.4964Ext.23/4-8 UN3A02.752.735-2.66882.66252.6012Int.3B1.51051.5021.53121.52641.5625Int.3B2.62972.6152.67692.66882.75Ext.19/16-20 UN2A0.00141.56111.553-1.52861.52381.5016Ext.23/4-10 UNS2A0.0022.7482.7351-2.6832.67632.629Int.2B1.521.5081.53621.531.5625Int.2B2.6632.6422.69372.6852.75Ext.19/16-20 UN3A01.56251.5544-1.531.52641.503Ext.23/4-12 UN2A0.00192.74812.7367-2.6942.68782.6489Int.3B1.51621.5081.53461.531.5625Int.2B2.6782.662.7042.69592.75Ext.23/4-12 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Hoja2TornillosAtornille formas de roscaLa forma ms comn es la rosca de tornillo uno con un perfil en V simtrica.El ngulo incluido es de 60 grados.Esta forma es frecuente en la rosca unificada (ONU, UNC, UNF, UNRC, UNRF) forma, as como la rosca ISO / mtricas.La ventaja de hilos simtricos es que son ms fciles de fabricar e inspeccionar en comparacin con hilos no simtricas.Estos se utilizan tpicamente en los sujetadores de propsito general.Otros temas simtricos son el Whitworth y el Acme.La forma de la rosca Acme tiene una rosca ms fuerte que permite para el uso en aplicaciones de traduccin tales como las que implican cargas pesadas de la mquina en movimiento tal como se encuentra en mquinas herramienta.Anteriormente hilos cuadrados con lados paralelos se utilizan para las mismas aplicaciones.La forma de la rosca cuadrada, mientras que la fuerte, es ms difcil de fabricar.Asimismo, no se puede compensar el desgaste a diferencia de una rosca Acme.Enlaces patrocinadosMARK Rectificadoras planaspequeas a extra grande Tamao de la tabla de la alta precisin, 631-231-0200www.swhprecision.comTamao bsicoes el tamao nominal al que la tolerancia se aplica para determinar el tamao mximo y mnimo de material.Subsidioes la diferencia entre el diseo (condicin material mxima, MMC) tamao y el tamao bsico.Verla serie estndar unificado.Clases Tema:Las diferentes clases de hilo tienen diferentes cantidades de la tolerancia y el subsidio.Las clases 1A, 2A, 3A aplica roscas externas camisetas, clases 1B, 2B, 3B se aplican a roscas internas.Verla serie estndar unificado.Las clases 2A y 2BEl dimetro mximo de no recubierto (unplated) Clase 2A (externa) rosca son inferiores a la base por la cantidad de derechos de emisin.Cuando se pretende un revestimiento, el dimetro mximo de la clase 2A puede ser superado por la cantidad de derechos de emisin.Para una rosca interna, los dimetros mnimos son bsicas, cubierto o no (plateado) - no tiene en cuenta est disponible en los lmites mximos de metales.Verla serie estndar unificado.Clases 3A y 3Bse utilizan para tolerancias ms estrechas que los disponibles a partir de las clases 2A y 2B.Los dimetros mximos de hilos Clase 3A (externos) y los dimetros mnimos de Clase 3B (interna) temas son bsicas, ya sea recubierto (plateado) o no - por lo tanto no tiene en cuenta o el aclaramiento es disponible para el montaje de los componentes en la condicin material mxima.Verla serie estndar unificado.Las clases 1A y 1Bson los hilos de recambio para American Nacional de la Clase 1.Estn diseados para aplicaciones especiales en que las piezas de repuesto, para un montaje rpido y fcil, incluso cuando los temas estn ligeramente daados o sucios.Verla serie estndar unificado.Recubrimiento (o chapado) de hilos delas roscas externas no debe ser mayor que el tamao bsico despus de la siembra, y los hilos de rosca internos no debe ser menor que el tamao bsico despus de la siembra.Para las piezas de electro-plateado, subsidio Clase 2A es suficiente para que el forro acumulacin.Despus de placas las roscas externas debe pasar a la Clase 3A bsicos IR relativa y una clase 2A NO-GO medidor.Clase 3A no incluye una asignacin - la asignacin de la clase 2A se puede utilizar como el tiempo que sea adecuada para el espesor de recubrimiento considerado.Dado que slo roscas externas clase 2A tienen una asignacin explcita de recubrimiento, otras clases interna y externa deben tener el tamao limita ajustado para tener en cuenta el espesor de revestimiento deseado.

Hoja3