英制螺纹尺寸公差表

英制螺纹尺寸公差表 单位：毫米规格代号系列 代号等级螺距外螺纹内螺纹名义直径 每英寸牙数外径中径内径小径中径大径10.06080 （0#80）UNF20.31751.5113 0.081281.30556 0.04572 1.122681.1811 +0.124461.3182 +0.058421.52430.31751.5240 0.081281.3182 0.033021.135381.1811 +0.124461.3182 +0.043181.52420.07364 （1#64）UNC20.3968751.83896 0.096521.58242 0.05081.351281.42494 +0.157481.59766 +0.066041.854230.3968751.8542 0.096521.59766 0.03811.366521.42494 +0.157481.59766 +0.048261.854230.07372 （1#72）UNF20.3527771.83896 0.08891.61036 0.048261.407161.4732 +0.13971.6256 +0.06351.854230.3527771.8542 0.08891.6256 0.035561.42241.4732 +0.13971.6256 +0.048261.854240.08656 （2#56）UNC20.4535712.16916 0.104141.87452 0.053341.61291.69418 +0.17781.88976 +0.071122.184430.4535712.1844 0.104141.88976 0.040641.628141.69418 +0.17781.88976 +0.053342.184450.08664 （2#64）UNF20.3968752.16916 0.096521.91262 0.05081.681481.75514 +0.157481.92786 +0.068582.184430.3968752.1844 0.096521.92786 0.03811.696721.75514 +0.157481.92786 +0.05082.184460.09948 （3#48）UNC20.5291662.49682 0.11432.15392 0.058421.846581.94056 +0.205742.1717 +0.076202.514630.5291662.5146 0.11432.1717 0.043181.864361.94056 +0.205742.1717 +0.055882.514670.09956 （3#56）UNF20.4535712.49682 0.104142.20218 0.055881.940562.02438 +0.172722.21996 +0.071122.514630.4535712.5146 0.104142.21996 0.040641.958342.02438 +0.172722.21996 +0.053342.514680.11240 （4#40）UNC20.6352.82448 0.129542.413 0.06352.04472.15646 +0.22862.43332 +0.083822.844830.6352.8448 0.129542.43332 0.048262.065022.15646 +0.22862.43332 +0.060962.844890.11248 （4#48）UNF20.5291662.82702 0.11432.48412 0.060962.176782.27076 +0.187962.5019 +0.078742.844830.5291662.8448 0.11432.5019 0.045722.194562.27076 +0.187962.5019 +0.058422.8448100.12540 （5#40）UNC20.6353.15468 0.129542.7432 0.066042.37492.48666 +0.210822.76352 +0.083823.17530.6353.175 0.129542.76352 0.048262.395222.48666 +0.210822.76352 +0.06353.175110.12544 （5#44）UNF20.5772733.15722 0.121922.7813 0.06352.448562.55016 +0.19052.79908 +0.081283.17530.5772733.175 0.121922.79908 0.048262.466342.55016 +0.19052.79908 +0.060963.175120.13832 （6#32）UNC20.793753.48488 0.15242.96926 0.071122.512062.6416 +0.2542.98958 +0.093983.505230.793753.5052 0.15242.98958 0.053342.532382.6416 +0.2542.98958 +0.068583.5052130.13840 （6#40）UNF20.6353.48488 0.129543.0734 0.066042.70512.8194 +0.20323.09372 +0.086363.505230.6353.5052 0.129543.09372 0.05082.725422.8194 +0.193043.09372 +0.06353.5052序号规格代号系列代号等级螺距外螺纹 内螺纹名义直径 每英寸牙数外径中径 内径 小径中径大径140.16432 （8#32）UNC20.793754.14274 0.15243.62712 0.073663.169923.302 +0.22863.64998 +0.096524.165630.793754.1656 0.15243.64998 0.055883.192783.302 +0.226063.64998 +0.071124.1656150.16436 （8#36）UNF20.705554.14528 0.13973.68808 0.071123.279143.4036 +0.20323.7084 +0.091444.165630.705554.1656 0.13973.7084 0.053343.299463.4036 +0.193043.7084 +0.068584.1656160.19024 （10#24）UNC21.058334.8006 0.182884.11226 0.083823.502663.683 +0.27944.13766 +0.109224.82631.058334.826 0.182884.13766 0.06353.528063.683 +0.26674.13766 +0.081284.826170.19032（10#32）UNF20.793754.80314 0.15244.28752 0.07623.830323.9624 +0.20324.31038 +0.099064.82630.793754.826 0.15244.31038 0.058423.853183.9624 +0.205744.31038 +0.073664.826180.21624UNC21.058335.461 0.182884.77266 0.086364.163064.3434 +0.2544.79806 +0.111765.486431.058335.4864 0.182884.79806 0.066044.188464.3434 +0.246384.79806 +0.83825.4864190.21628UNF20.907145.461 0.16514.87172 0.081284.348484.4958 +0.22864.89712 +0.106685.486430.907145.4864 0.16514.89712 0.060964.373884.4958 +0.220984.89712 +0.078745.4864200.21632UNEF20.793755.46354 0.15244.94792 0.078744.490724.6228 +0.20324.97078 +0.104145.486430.793755.4864 0.15244.97078 0.060964.513584.6228 +0.19054.97078 +0.078745.4864210.25020 1/420UNC11.276.32206 0.309885.49656 0.142244.765044.9784 +0.27945.5245 +0.185426.3521.276.32206 0.205745.49656 0.093984.765044.9784 +0.27945.5245 +0.124466.3531.276.35 0.205745.5245 0.071124.792984.9784 +0.271785.5245 +0.091446.35220.25028 1/428UNF10.907146.3246 0.248925.73532 0.1275.212085.3594 +0.22865.76072 +0.16516.3520.907146.3246 0.16515.73532 0.083825.212085.3594 +0.22865.76072 +0.109226.3530.907146.35 0.16515.76072 0.06355.237485.3594 +0.20325.76072 +0.081286.35230.25032 1/432UNEF20.793756.3246 0.15245.80898 0.81285.351785.4864 +0.20325.83438 +0.106686.3530.793756.35 0.15245.83438 0.60965.377185.4864 +0.175265.83438 +0.078746.3524.312518 5/1618UNC11.411117.90702 0.332746.99008 0.154946.174746.4008 +0.33027.02056 +0.200667.937521.411117.90702 0.220986.99008 0.10166.174746.4008 +0.33027.02056 +0.134627.937531.411117.9375 0.220987.02056 0.07626.205226.4008 +0.27947.02056 +0.099067.9375序号规格代号系列代号等级螺距 外螺纹 内螺纹名义直径 每英寸牙数 外径 中径 内径 小径中径 大径25.312520 5/1620UN21.277.90702 0.205747.08152 0.10166.356.5532 +0.30487.112 +0.132087.937531.277.9375 0.205747.112 0.07626.380486.5532 +0.2547.112 +0.099067.937526.312524 5/1624UNF11.0583337.90956 0.274327.22122 0.13976.611626.7818 +0.2547.24916 +0.180347.937521.0583337.90956 0.182887.22122 0.093986.611626.7818 +0.2547.24916 +0.121927.937531.0583337.9375 0.182887.24916 0.68586.639566.7818 +0.213367.24916 +0.091447.937527.312528 5/1628UN20.907147.9121 0.16517.32282 0.86366.799586.9596 +0.20327.34822 +0.111767.937530.907147.9375 0.16517.34822 0.066046.824986.9596 +0.170187.34822 +0.083827.937528.312532 5/1632UNEF20.793757.9121 0.15247.39648 0.081286.939287.0866 +0.17787.42188 +0.106687.937530.793757.9375 0.15247.42188 0.060966.964687.0866 +0.144787.42188 +0.78747.9375290.37516 3/816UNC11.58759.49198 0.360688.46074 0.16517.54387.7978 +0.35568.49376 +0.21599.52521.58759.49198 0.238768.46074 0.111767.54387.7978 +0.35568.49376 +0.144789.52531.58759.525 0.238768.49376 0.083827.576827.7978 +0.284488.49376 +0.109229.525300.37520 3/820UN21.279.49452 0.205748.66902 0.104147.93758.1534 +0.27948.6995 +0.137169.52531.279.525 0.205748.6995 0.078747.967988.1534 +0.220988.6995 +0.10169.525310.37524 3/824UNF11.0583339.49706 0.274328.80872 0.144788.199128.382 +0.2548.83666 +0.187969.52521.0583339.49706 0.182888.80872 0.096528.199128.382 +0.2548.83666 +0.124669.52531.0583339.525 0.182888.83666 0.073668.227068.382 +0.182888.83666 +0.093989.525320.37528 3/828UN20.907149.49706 0.16518.90778 0.091448.384548.5344 +0.22868.93572 +0.116849.52530.907149.525 0.16518.93572 0.068588.412488.5344 +0.167648.93572 +0.08899.525330.37532 3/832UNEF20.793759.4996 0.15248.98398 0.086368.526788.6614 +0.20329.00938 +0.111769.52530.793759.525 0.15249.00938 0.06358.552188.6614 +0.149869.00938 +0.083829.525340.437514UNC11.81428611.07694 0.39379.89838 0.180348.85199.144 +0.40649.93394 +0.2336811.112521.81428611.07694 0.261629.89838 0.119388.85199.144 +0.40649.93394 +0.1549411.112531.81428611.1125 0.261629.93394 0.08898.887469.144 +0.297189.93394 +0.1168411.1125350.437516UN21.587511.07694 0.2387610.0457 0.116849.128769.398 +0.355610.08126 +0.1498611.112531.587511.1125 0.2387610.08126 0.086369.164329.398 +0.25410.08126 +0.114311.1125序号规格代号系列代号等级螺距 外螺纹 内螺纹名义直径 每英寸牙数 外径 中径 内径 小径中径 大径360.437520UNF11.2711.07948 0.3098810.25398 0.160029.522469.7282 +0.304810.287 +0.2057411.112521.2711.07948 0.2057410.25398 0.106689.522469.7282 +0.304810.287 +0.1371611.112531.2711.1125 0.2057410.287 0.078749.555489.7282 +0.2184410.287 +0.1041411.1125370.437528UNEF20.90714311.08456 0.165110.49528 0.091449.9720410.1346 +0.203210.52322 +0.1168411.112530.90714311.1125 0.165110.52322 0.068589.9999810.1346 +0.154910.52322 +0.088911.1125380.437532UN20.7937511.0871 0.152410.57148 0.0863610.1124810.2616 +0.177810.59688 +0.1117611.112530.7937511.1125 0.152410.59688 0.063510.1396810.2616 +0.137210.59688 +0.0838211.1125390.50013UNC11.95384612.6619 0.4140211.3919 0.1879610.2641410.5918 +0.431811.43 +0.2463812.721.95384612.6619 0.2768611.3919 0.12710.2641410.5918 +0.431811.43 +0.165112.731.95384612.700 0.2768611.43 0.0939810.3022410.5918 +0.289611.43 +0.1219212.7400.50016UN21.587512.66444 0.2387611.6332 0.1193810.7162610.9728 +0.355611.66876 +0.1549412.731.587512.700 0.2387611.66876 0.088910.7518210.9728 +0.251511.66876 +0.1168412.7410.50020UNF11.2712.66698 0.3098811.84148 0.1625611.1099611.3284 +0.431811.8745 +0.2133612.721.2712.66698 0.2057411.84148 0.1092211.1099611.3284 +0.431811.8745