常用螺纹尺寸及公差汇总表
常用螺纹尺寸及公差汇总表
公制螺纹基本直径内螺纹公差等级外螺纹公差6H7H6G大径中径小径中径公差小径公差中径公0,差小径公差中径公差小径公差M10*1109.358.9170,+0.1500,+0.2360,+0.1900,+0.300-0.026,-0.138-0.026,0.206M12*11211.3510.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,0.206M14*11413.35122.9170,+0.1600,+0.2360,+0.2000,+0.300-0.026,-0.144-0.026,0.206M12*1.251211.18810.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240 M14*1.251413.18812.6470,+0.1800,+0.2650,+0.2240,+0.335-0.028,-0.160-0.028,-0.240 M12*1.51211.02610.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M14*1.51413.02612.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M16*1.51615.02614.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M18*1.51817.02616.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M20*1.52019.02618.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M22*1.52221.02620.3760,+0.1900,+0.3000,+0.2360,+0.375-0.032,-0.172-0.032,-0.268 M24*1.51423.02622.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M26*1.52625.02624.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M27*1.52726.02625.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M30*1.53029.02628.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M33*1.53332.02631.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M36&1.53635.02634.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M39*1.53938.02637.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M42*1.54241.02640.3760,+0.2000,+0.3000,+0.2500,+0.375-0.032,-0.182-0.032,-0.268 M27*22725.70124.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M30*23028.70127.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M33*23331.70130.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M36*23634.70133.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M39*23937.70136.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M42*24240.70139.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M45*24543.70142.8350,+0.2240,+0.3750,+0.2800,+0.475-0.038,-0.208-0.038,-0.318 M52*25250.70149.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318 M60*26058.70157.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318 M64*26462.70161.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318 M72*27270.70169.8350,+0.2360,+0.3750,+0.3000,+0.475-0.038,-0.218-0.038,-0.318美制NPSM螺纹（美国标准ANSI B1.20.1机械连接用直管螺纹60度）外螺纹（2A级）内螺纹（2B级）大径中径小径中径标号螺纹代号最大值最小值最大值最小值最小值最大值最小值最大值021/8-27NPSM 10.0849.9069.4629.3709.0939.2469.4899.609041/4-18NPSM 13.36013.13212.45412.34211.88712.21712.48712.634063/8-18NPSM 16.81516.58615.89015.77615.31615.54515.92616.076081/2-14NPSM 20.90420.65019.73319.60418.97419.27919.77119.942123/4-14NPSM 26.26426.01025.07724.94324.33324.63825.11825.293161-11.5NPSM 32.84232.53731.41731.27030.50530.75931.46031.65320 1.1/4-11.5NPSM 41.60541.30040.17340.02039.26839.49740.21840.41624 1.1/2-11.5NPSM 47.67647.37146.24146.08645.33945.56846.28646.487322-11.5NPSM 59.71559.41158.27858.12057.37957.60758.32658.53240 2.1/2-8NPSM 72.16171.78070.10469.91668.78369.26670.16070.409483-8NPSM 88.06287.68186.00985.81684.68485.16686.06886.319NPT 布锥管螺纹基面上的直径螺纹长度标号螺纹代号大径中径小径管端至基面长有效长度端面大径02Z1/8*2710.2429.4898.736 4.102 6.7039.98604Z1/4*1813.61612.48711.3855.78610.20613.25406Z3/8*1817.05515.92614.7976.09610.35816.67408Z1/2*1421.22319.77218.3218.12813.55620.71512Z3/4*1426.56825.11723.6668.61113.86126.03016Z1*11.533.22831.46129.69410.16017.34332.59320Z1.1/4*1.541.98540.21838.45110.66817.95341.31824Z1.1/2*11.548.05446.28744.52010.66818.37747.38732Z2*11.560.09258.32556.55811.07419.21559.40040Z2.1/2*872.69970.15967.61917.32328.89271.61648Z3*888.60886.06883.52819.45630.48087.39255度英锥管螺纹基本直径内螺纹外螺纹公差等级AB 标号螺纹代号大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差02G1/8*289.7289.1478.5660.170，00.282，00，-0.1700，-0.2140，-0.2140，-0.21404G1/4*1913.15712.30111.4450.125，00.445，00.-0.1250，-0.2500，-0.2500，-0.25006G3/8*1916.66215.80614.9500.125，00.445，00，-0.1250，-0.2500，-0.2500，-0.25008G1/2*1420.95519.79318.6310.142，00.541，00，-0.1420，-0.2840，-0.2840，-0.28410G5/8*1422.91121.74920.5870.142，00.541，00，-0.1420，-0.2840，-0.2840，-0.28412G3/4*1426.44125.27924.1170.142，00.541，00，-0.1420，-0.2840，-0.2840，-0.28416G1*1133.24931.77030.2910.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36020G1.1/4*1141.91040.43138.9520.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36024G1.1/2*1147.80346.32444.8450.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36032G2*1159.61458.13556.6560.180，00.640，00，-0.1800，-0.3600，-0.3600，-0.36040G2.1/2*1175.18473.70572.2260.217，00.640，00，-0.2170，-0.4340，-0.4340，-0.43448G3*1187.88486.40584.9260.217，00.640，00，-0.2170，-0.4340，-0.4340，-0.43455度英锥管螺纹基面上的直径基准长度有效螺纹长度标号螺纹代号大径中径小径基本最大最小基本最大最小圆锥内螺纹基面轴向位移的极限偏差端面大径02R1/8*289.7289.1478.5664 4.9 3.16.57.4 5.61.19.47804R1/4*1913.15712.30111.44567.3 4.79.7118.4 1.712.78206R3/8*1916.66215.80614.950 6.47.7 5.110.111.48.8 1.716.26208R1/2*1420.95519.79318.6318.2106.413.21511.42.320.44312R3/4*1426.44125.27924.1179.511.37.714.516.312.7 2.325.84716R1*1133.24931.77030.29110.412.78.116.819.114.5 2.932.59920R1.1/4*1141.91040.43138.95212.71510.419.121.416.8 2.941.11624R1.1/2*1147.80346.32444.84512.71510.419.121.416.8 2.947.00932R2*1159.61458.13556.65615.918.213.623.425.721.1 2.958.62040R2.1/2*1175.18473.70572.22617.5211426.730.223.2 3.574.09048R3*1187.88486.40584.92620.624.117.129.833.326.3 3.586.597美制螺纹外螺纹内螺纹公差等级2A公差等级2B大径中径小径中径标号螺纹代号最大最小最大最小小径最大最小最大最小最大大径最小JIC 螺纹025/16×24UNF 7.9107.7277.2217.127 6.6506.7827.0367.2497.3717.938033/8*24UNF9.4979.3148.8098.7128.2378.3828.6368.8378.9619.525047/16*20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.113051/2*20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.7069/16*18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288083/4*16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05107/8*14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225121.1/16*12UNF26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988161.5/16*12UNF33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338201.5/8*12UNF41.22940.9439.85539.70538.7138.98939.44639.90140.09441.275241.7/8*12UNF47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625322.1/2*12UNF63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5403812UNF76.15775.86274.77874.61873.63273.91474.37174.82675.03476.218HK1.1/2*10UNF38.05237.72436.40136.23835.02935.35735.89036.44936.66038.100ORFS 螺纹049/16*18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2880611/16*16UNF17.42717.18816.39616.27415.53515.74816.10416.43116.58917.4630813/16*16UNF20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638101*14UNSF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4121.3/16*12UN30.11929.8328.75428.59827.627.86428.32128.78828.97930.163161.7/16*12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513201.11/16*12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863242*12UN50.75450.46549.3849.2548.23548.51448.97149.42649.62750.8SAE 螺纹065/8×18UNF 15.83915.61814.92314.80314.16114.35114.68114.95815.1115.875121.1/16*14UNF26.94726.683 25.74325.60824.7424.96825.37525.78325.96126.987其他美制螺纹9/16*16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8*12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.2252.1/4*12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15可拆式芯子与套筒连接螺纹外螺纹内螺纹公差等级2B 大径中径小径中径软管编号螺纹代号最大最小最大最小小径最小最大最小最大大径R5-049/32*327.1206.967 6.604 6.523 6.175 6.294 6.472 6.629 6.7367.145R5-0546/127*289.1979.0328.6088.5168.1158.2348.4638.6368.7539.225R5-06107/254*2810.68510.52010.09510.0049.6039.7359.93810.12310.24010.713R5-089/16*2414.25714.07413.56913.47012.99713.13213.38613.59913.72914.288R5-1011/16*2417.43217.24916.74416.64216.17216.30716.56116.77416.90617.463R5-1213/16*2020.59920.39919.77919.66719.34719.25319.55819.81219.98220.638R5-161.1/16*1826.95226.73126.03525.91625.27325.45125.78126.07126.22826.988R5-201.5/16*1833.29933.07832.38232.25831.62031.80132.13132.42132.58133.338R5-241.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.688R5-322*1850.76250.54149.84549.71549.08349.27649.60649.88350.05350.8002A-047/16*2011.07910.87410.25410.1479.5689.72810.03310.28710.42411.1132A-069/16*1814.25214.03113.33513.22112.57312.75113.08113.37113.52014.2882A-085/8*1815.83915.61814.92314.80314.16114.35114.68114.95815.11015.8752A-103/4*1819.01418.79318.09817.98117.33617.52617.85618.13318.28519.0502A-127/8*1822.18921.96821.27321.15620.51120.70121.03121.30821.46022.2252A-161.3/16*1630.12429.87029.09328.96428.23228.44828.80429.13129.29930.1632A-201.9/16*1839.64939.42838.73238.60537.97038.15138.48138.77138.93639.688新西兰B09内螺纹标号你螺纹代号大径MIN中径MIN中径MAX小径MIN小径MAX B-090.860in*1421.84420.68320.84119.522NPTF+密封管螺纹标号螺纹代号外螺纹小端中径外螺纹大端中径外螺纹小端大径最小外螺纹小端大径最大外螺纹全牙长度内螺纹大端中径内螺纹小端中径内螺纹大端小径最小内螺纹大端小径最大内螺纹全牙长度21/8-27NPTF9.2339.6529.8719.960 6.7039.4899.0588.7638.851 6.924 41/4-18NPTF12.12612.76413.12813.21510.20612.48711.86211.39811.48610.020 63/8-18NPTF15.54516.19316.54716.63410.35815.92615.28114.83714.92410.330 81/2-14NPTF19.26420.11120.61620.70313.55619.77218.92618.33318.42013.571 123/4-14NPTF24.57925.44525.93126.01813.86125.11724.23923.67823.76814.054 161-11.5NPTF30.82631.91032.47432.56217.34331.46130.41129.72529.81316.787 20 1.1/4-11.5NPTF39.55140.67341.19941.28717.95340.21839.13638.48238.57017.295 24 1.1/2-11.5NPTF45.62146.76947.26947.35718.37746.28745.20744.55144.64017.295 322-11.5NPTF57.63358.83459.28159.36919.21558.32557.21956.58956.67717.701 40 2.1/2-8NPTF69.07670.88271.47671.55928.89370.15968.48167.67667.75926.848 483-8NPTF84.85286.75787.25287.33530.48086.06884.25783.58583.66828.981备注：1.表中外螺纹的完整螺纹长度包括不超过一个螺距长度的倒角2.表中内螺纹的完整螺纹长度不包括在中径线和倒角交线外的锥口孔。
各国标准螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55º）BSPP之宇文皓月创作英制锥管螺纹基本尺寸及公差（牙形角55º）BSPT美制管螺纹基本尺寸及公差（牙形角60º）UN(F)布锥管螺纹基本尺寸及公差(牙形角60º)NPT公制螺纹基本尺寸及公差(牙形角60º)M55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹(BSPT)6 0 09 1 872聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm—1020mm*200mm 合金钢管、外径22mm-127mm冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn 外径400—1600mm、壁厚20—60mm的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
适用于工程、煤矿、纺织、电力、锅炉、机械、军工等各个领域。
公司以良好的信用、优质的产品、雄厚的实力、低廉的价钱享誉全国30多个省、市、自治区、直辖市及国外，产品深得用户依赖。
管螺纹的基本尺寸表(2010-10-25 15:57:35)标签：杂谈表（1）螺纹基本尺寸G1/2 、ZG1/2 (单位:mm)尺寸代每螺距p 牙型圆弧半基面上的基本直径基准有效锥管螺纹的基本尺寸表（3-28）1/2PT 、1/2NPT 表（2）螺纹基本尺寸 (单位:mm)螺纹尺度的一种，按外形分圆柱、圆锥两种；按牙型角分55°、60°两种。
各国标准螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55º）BSPP英制锥管螺纹基本尺寸及公差（牙形角55º）BSPT美制管螺纹基本尺寸及公差（牙形角60º）UN(F)公制螺纹基本尺寸及公差(牙形角60º) M55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹(BSPT)R4 4"113.032.30911111.551110.0721.479R5 5"138.432.30911136.951135.4721.479R66"163.832.30911162.351160.8721.479聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm—1020mm*200mm合金钢管、外径22mm-127mm冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn外径400—1600mm、壁厚20—60mm 的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
适用于工程、煤矿、纺织、电力、锅炉、机械、军工等各个领域。
公司以良好的信用、优质的产品、雄厚的实力、低廉的价钱享誉全国30多个省、市、自治区、直辖市及国外，产品深得用户依赖。
管螺纹的基本尺寸表(2010-10-25 15:57:35)转载▼标签：杂谈表（1）螺纹基本尺寸G1/2 、ZG1/2 (单位:mm)尺寸代号每25.4mm类的牙数n螺距p 牙型高度h圆弧半径r≈基面上的基本直径基准距离有效螺纹长度大径（基准直径）d=D中径d2=D2小径d1=D1锥管螺纹的基本尺寸表（3-28）1/2PT 、1/2NPT 表（2）螺纹基本尺寸 (单位:mm)螺纹标准的一种，按外形分圆柱、圆锥两种；按牙型角分55°、60°两种。
螺纹基本尺寸及公差
螺纹基本尺寸及公差浙江苏强格液压有限公司质量作业文件产品代号规则Q/SQ-G8.4-031 过渡接头编号规则1.1 直通过渡接头编号规则直通过渡接头型号左端标号右端标号直通过渡接头型号中的第一位为数字，表示两端内外螺纹的组合情况;第二、三位为字母，分别表示左右端的结构型式，当左右端结构型式相同时，则使用一位字母，当左右端标号相同时，也使用一组标号。
1.1.1 型号中的第一位数字的含义如下表1 外螺纹/外螺纹 6 过板接头(右端过板)1 法兰/对接式焊接头 7 固定内螺纹/固定内螺纹(无螺母或插入焊)2 外螺纹/活动内螺纹(活动螺母) 8 锁母3 活动内螺纹/活动内螺纹 9 内螺纹堵头4 外螺纹堵头.堵板5 外螺纹/固定内螺纹5 外螺纹/较短焊接管1.1.2 型号中第二、三位字母的含义如下表A 英管螺纹球面 M 公制60?锥面或六角端面组合垫密封B 英管螺纹60?锥面或六角端面组合垫密封 N 美制布锥管C 公制24?轻系列 O 美制SAE O-Ring BOSSD 公制24?重系列 P 美制SAE 90?E 公制平面带O形圈 Q 公制74?F 美制ORFS平面 S 日式英管螺纹60?外锥G 英管螺纹平面、O-Ring密封 T 英锥管螺纹H 公制六角端面O-Ring密封 U NPSMI 710xx系列国标公制铰接体 W 焊接管J 美制JIC 74? X 表示与软管相连用卡环固定K 公制螺纹60?外锥(小松) Y 矿用接头(SAE标准)L 公制组合垫圈密封 Z BSP平面用组合垫密封1Q/SQ-G8.4-031.1.3 左右端标号根据左右端头部的螺纹或尺寸大小定，如下表:英管G1/8” G1/4” G3/8” G1/2” G5/8” G3/4” G1.1/4” G1.1/2” --G1”x11 G2”x11 螺纹 x28 x19 x19 x14 x14 x14 x11 x11 英锥管R1/8”R1/4” R3/8” R1/2” R3/4” R1.1/4” R1.1/2” -- -- R1”x11 R2”x11 螺纹x28 x19 x19 x14 x14 x11 x11 布锥管Z1/8” Z1/4” Z3/8” Z1/2” Z3/4”Z1.1/4” Z1.1/2” Z2” -- Z1”x11.5 螺纹 x27 x18 x18 x14 x14 x11.5 x11.5 x11.5 美制JIC 7/16” 1/2” 9/16” 3/4” 7/8” 1.1/16” 1.5/16” 1.5/8”1.7/8”2.1/2” -- 螺纹 x20 x20 x18 x16 x14 x12 x12 x12 x12 x12 美制ORFS9/16” 11/16” 13/16” 1” 1.3/16” 1.7/16” 1.11/16” 2” -- -- -- 螺纹 x18 x16 x16 x14 x12 x12 x12 x12 美制SAE5/8” 1.1/16” 螺纹 x18 x14 法兰1/2“ 5/8“ 3/4“ 1“ 1.1/4“ 1.1/2“ 2“ 插装式 04 06 08 12 16 20 24 32 标号 02 04 05 06 08 10 12 16 20 24 32 注:公制螺纹的标号按螺纹外径，卡套式直管的标号按直管外径。
常用螺纹尺寸及公差汇总表
常用螺纹尺寸及公差汇总表公制螺纹基本直径内螺纹公差等级小径6H 7H 6g中径公差小径公差中径公0,差小径公差中径公差8.917 0,+0.150 0,+0.236 0,+0.190 0,+0.300 -0.026,-0.138 10.917 0,+0.160 0,+0.236 0,+0.200 0,+0.300 -0.026,-0.144 122.917 0,+0.160 0,+0.236 0,+0.200 0,+0.300 -0.026,-0.144 10.647 0,+0.180 0,+0.265 0,+0.224 0,+0.335 -0.028,-0.160 12.647 0,+0.180 0,+0.265 0,+0.224 0,+0.335 -0.028,-0.160 10.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 12.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 14.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 16.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 18.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 20.376 0,+0.190 0,+0.300 0,+0.236 0,+0.375 -0.032,-0.172 22.376 0,+0.200 0,+0.300 0,+0.250 0,+0.375 -0.032,-0.182美制NPSM螺纹（美国标准ANSI B1.20.1机械连接用直管螺纹60度）NPT布锥管螺纹55度英锥管螺纹55度英锥管螺纹本大小本R1/8*28 9.728 9.147 8.566 4 4.9 3.1 6.5 R1/4*19 13.157 12.301 11.445 6 7.3 4.7 9.7美制螺纹可拆式芯子与套筒连接螺纹新西兰B09内螺纹NPTF+密封管螺纹备注：1.表中外螺纹的完整螺纹长度包括不超过一个螺距长度的倒角2.表中内螺纹的完整螺纹长度不包括在中径线和倒角交线外的锥口孔。
(完整版)螺纹基本尺寸对照表(最新整理)
英制管螺纹基本尺寸及公差（牙形角55º）BSPP基本直径内螺纹外螺纹A级B级螺纹代号大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差G1/8″×289.7289.1478.566+0.170+0.282-0.107-0.214-0.214-0.214G1/4″×1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8″×1916.66215.80614.950+0.125+0.445-0.125-0.250-0.250-0.250G1/2″×1420.95519.79318.631+0.142+0.541-0.142-0.284-0.284-0.284G5/8″×1422.91121.74920.587+0.142+0.541-0.142-0.284-0.284-0.284G3/4″×1426.44125.27924.117+0.142+0.541-0.142-0.284-0.284-0.284G1″×1133.24931.77030.291+0.180+0.640-0.180-0.360-0.360-0.360G1.1/4″×1141.91040.43138.952+0.180+0.640-0.180-0.360-0.360-0.360G1.1/2″×1147.80346.32444.854+0.180+0.640-0.180-0.360-0.360-0.360G2″×1159.61458.13556.656+0.180+0.640-0.180-0.360-0.360-0.360G2.1/2”X1175.18473.70572.226+0.217+0.640-0.217-0.434-0.434-0.434G3”X1187.88486.40584.926+0.217+0.640-0.217-0.434-0.434-0.434G3.1/2”X11100.33098.85197.372+0.217+0.640-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55º）BSPT基面上的直径基准长度有效螺纹长度螺纹代号大径中径小径基本最大最小基本最大最小圆锥内螺纹基面轴向位移偏差（±mm）R1/8″×289.7289.1478.566 4.0 4.9 3.1 6.57.4 5.6 1.1 R1/4″×1913.15712.30111.445 6.07.3 4.79.711.08.4 1.7 R3/8″×1916.66215.80614.950 6.47.7 5.110.111.48.8 1.7 R1/2″×1420.95519.79318.6318.210.0 6.413.215.011.4 2.3 R3/4″×1426.44125.27924.1179.511.37.714.516.312.7 2.3 R1″×1133.24931.77030.29110.412.78.116.819.114.5 2.9 R1.1/4″×1141.91040.43138.95212.715.010.419.121.416.8 2.9 R1.1/2″×1147.80346.32444.84512.715.010.419.121.416.8 2.9 R2″×1159.61458.13556.65615.918.213.623.425.721.1 2.9 R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.2 3.5 R3”X1187.88486.40584.92620.624.117.129.833.326.3 3.5R3.1/2”X11100.33098.85197.37222.225.718.731.434.927.9 3.5美制管螺纹基本尺寸及公差（牙形角60º）UN(F)外螺纹内螺纹公差等级公差等级2A2B 螺纹代号大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹7/16″×20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.113 1/2″×20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.7 9/16″×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 3/4″×16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05 7/8″×14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225 1-1/16″×12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988 1-5/16″×12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338 1-5/8″×12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.275 1-7/8″×12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625 2-1/2″×12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺纹9/16″×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 11/16″×16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.463 13/16″×16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638 1″×14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4 1-3/16″×12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.163 1-7/16″×12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513 1-11/16″×12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863 2″×12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺纹5/8″×18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.875 1-1/16″×14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16″×16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.288 7/8″×12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.225 2-1/4″×12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注：UNC粗牙螺纹系列，UNF细牙螺纹系列，UNEF超细牙螺纹系列，UN不变螺距系列布锥管螺纹基本尺寸及公差(牙形角60º) NPT基面上的直径螺纹长度螺纹代号大径中径小径有效长度管端至基面长Z1/8″×2710.2729.5198.7667 4.572 Z1/4″×1813.57212.44311.3149.5 5.080 Z3/8″×1817.05515.92614.79710.5 6.096 Z1/2″×1421.22319.77218.32113.58.028 Z3/4″×1426.56825.11723.666148.611 Z1″×11.533.22831.46129.69417.510.160Z1.1/4″×11.541.98540.21838.4511810.688Z1.1/2″×11.548.05446.28744.52018.510.688Z2″×11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差(牙形角60º) M基本直径内 螺 纹外螺纹公 差 等 级公差等级6H7H6g螺纹代号大 径中 径小 径中径公差小径公差中径公差小径公差中径公差大径公差M10X1109.3508.917+0.1500+0.2360+0.1900+0.3000-0.026-0.138-0.026-0.206M12X11211.35010.917+0.1600+0.2360+0.2000+0.3000-0.026-0.144-0.026-0.206M14X11413.35012.917+0.1600+0.2360+0.2000+0.3000-0.026-0.144-0.026-0.206M12X1.251211.18810.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M14X1.251413.18812.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M12X1.51211.02610.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M14X1.51413.02612.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M16X1.51615.02614.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M18X1.51817.02616.373+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M20X1.52019.02618.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M22X1.52221.02620.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M24X1.52423.02622.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M26X1.52625.02624.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X1.52726.02625.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M30X1.53029.02628.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M33X1.53332.02631.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M36X1.53635.02634.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M39X1.53938.02637.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M42X1.54241.02640.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X22725.70124.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M30X23028.70127.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M33X23331.70130.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M36X23634.70133.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M39X23937.70136.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M42X24240.70139.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M45X24543.70142.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M52X25250.70149.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M60X26058.70157.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M64X26462.70161.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M72X27270.70169.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318。
常用螺纹尺寸与公差汇总表
0.-0.125
0，-0.250
0，-0.250
0，-0.250
06
G3/8*19
16.662
15.806
14.950
0.125，0
0.445，0
0，-0.125
0，-0.250
0，-0.250
0，-0.250
08
G1/2*14
20.955
19.793
18.631
0.142，0
0.541，0
M33*1.5
33
32.026
31.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M36*1.5
36
35.026
34.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M39*1.5
39
38.026
37.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
M42*1.5
42
41.026
40.376
0,+0.200
0,+0.300
0,+0.250
0,+0.375
-0.032,-0.182
-0.032,-0.268
螺纹塞规公差及尺寸表
螺纹塞规尺寸表内容来源网络，由“深圳机械展（11万㎡，1100多家展商，超10万观众）”收集整理！更多cnc加工中心、车铣磨钻床、线切割、数控刀具工具、工业机器人、非标自动化、数字化无人工厂、精密测量、3D打印、激光切割、钣金冲压折弯、精密零件加工等展示，就在深圳机械展.常用米制一般粗牙螺纹的螺距(螺纹底孔直径：碳钢φ＝公称直径－P；铸铁φ＝公称直径－1.05~1.1P；加工外螺纹光杆直径取φ＝公称直径－0.13P)：6g外螺纹大径6H内螺纹小径1 M10*1 9.974 9.794 0.180 9.157 8.917 0.2403 M14*1.5 13.968 13.732 0.236 12.676 12.376 0.3005 M18*1.5 17.968 17.732 0.236 16.676 16.376 0.3007 M22*1.5 21.968 21.732 0.236 20.676 20.376 0.3009 M26*1.5 25.968 25.732 0.236 24.676 24.376 0.30011 M30*1.5 29.968 29.732 0.236 28.676 28.376 0.30013 M30*2 29.962 29.682 0.280 28.210 27.835 0.37515 M36*2 35.962 35.682 0.280 34.210 33.835 0.375本规程适用于直径200mm以下新制造和运用中的一般螺纹塞规、圆柱管螺纹塞规和梯形螺纹环规的检定。
一、概述螺纹塞规是用于对内、外圆柱螺纹制件进行归纳检定的量具，它能操控螺纹制件的极限尺度。
螺纹量规按用处不同可分为三种:校正量规、作业量规和查验量规。
一般螺纹塞规一般每个公称尺度都是两个为一组。
一个是止规，一个是通规，别离约束了螺纹的尺度上限与下限.假如被测螺纹可以与螺纹通规旋合经过，且与螺纹止规不完全旋合经过(螺纹止规只允许与被测螺纹两段旋合，旋合量不得超越两个螺距)，就标明被测螺纹的作用中径没有超越其最大实体牙型的中径，且单一中径没有超出其最小实体牙型的中径，那么就可以确保旋合性和衔接强度，则被测螺纹中径合格。
各国标准螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55º）BSPP英制锥管螺纹基本尺寸及公差（牙形角55º）BSPT美制管螺纹基本尺寸及公差（牙形角60º）UN(F)公制螺纹基本尺寸及公差(牙形角60º) M55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹(BSPT)2 R5 5"138.432.30911136.951135.4721.479R66"163.832.30911162.351160.8721.479聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm—1020mm*200mm合金钢管、外径22mm-127mm冷轧无缝钢管、外径127mm-600mm.壁厚16mm-100mm.外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn外径400—1600mm、壁厚20—60mm 的大口径厚壁卷管.可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管.精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
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管螺纹的基本尺寸表(2010-10-25 15:57:35)转载▼标签：杂谈表（1）螺纹基本尺寸G1/2 、ZG1/2 (单位:mm)尺寸代号每25.4mm类的牙数n螺距p 牙型高度h圆弧半径r≈基面上的基本直径基准距离有效螺纹长度大径（基准直径）d=D中径d2=D2小径d1=D11/16 28 0.907 0.581 0.125 7.723 7.142 6.561 4.0 6.5 1/8 28 0.907 0.581 0.125 9.728 9.147 8.566 4.0 6.5 1/4 19 1.337 0.586 0.184 13.157 12.301 11.445 6.0 9.7 3/8 19 1.337 0.586 0.184 16.662 15.806 14.950 6.4 10.1 1/2 14 1.814 1.162 0.249 20.955 19.793 18.631 8.2 13.2锥管螺纹的基本尺寸表（3-28）1/2PT 、1/2NPT表（2）螺纹基本尺寸 (单位:mm)螺纹标准的一种.按外形分圆柱、圆锥两种；按牙型角分55°、60°两种。
螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55º） BSPP螺纹代号基本直径内螺纹外螺纹大径中径小径中径公差小径公差A级B级中径公差大径公差中径公差大径公差G1/8″×289.7289.1478.566+0.170+0.282-0.107-0.214-0.214-0.214G1/4″×1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8″×1916.66215.80614.950+0.125+0.445-0.125-0.250-0.250-0.250G1/2″×1420.95519.79318.631+0.142+0.541-0.142-0.284-0.284-0.284G5/8″×1422.91121.74920.587+0.142+0.541-0.142-0.284-0.284-0.284G3/4″×1426.44125.27924.117+0.142+0.541-0.142-0.284-0.284-0.284G1″×1133.24931.77030.291+0.180+0.640-0.180-0.360-0.360-0.360G1.1/4″×1141.91040.43138.952+0.180+0.640-0.180-0.360-0.360-0.360G1.1/2″×1147.80346.32444.854+0.180+0.640-0.180-0.360-0.360-0.360G2″×1159.61458.13556.656+0.180+0.640-0.180-0.360-0.360-0.360G2.1/2”X1175.18473.70572.226+0.217+0.640-0.217-0.434-0.434-0.434G3”X1187.88486.40584.926+0.217+0.640-0.217-0.434-0.434-0.434G3.1/2”X11100.33098.85197.372+0.217+0.640-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55º） BSPT螺纹代号基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向位移偏差（±mm）大径中径小径基本最大最小基本最大最小R1/8″×289.7289.1478.566 4.0 4.9 3.1 6.57.4 5.6 1.1 R1/4″×1913.15712.30111.445 6.07.3 4.79.711.08.4 1.7 R3/8″×1916.66215.80614.950 6.47.7 5.110.111.48.8 1.7 R1/2″×1420.95519.79318.6318.210.0 6.413.215.011.4 2.3 R3/4″×1426.44125.27924.1179.511.37.714.516.312.7 2.3 R1″×1133.24931.77030.29110.412.78.116.819.114.5 2.9 R1.1/4″×1141.91040.43138.95212.715.010.419.121.416.8 2.9 R1.1/2″×1147.80346.32444.84512.715.010.419.121.416.8 2.9 R2″×1159.61458.13556.65615.918.213.623.425.721.1 2.9 R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.2 3.5 R3”X1187.88486.40584.92620.624.117.129.833.326.3 3.5 R3.1/2”X11100.33098.85197.37222.225.718.731.434.927.9 3.5美制管螺纹基本尺寸及公差（牙形角60º） UN(F)螺纹代号外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹7/16″×20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.113 1/2″×20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.7 9/16″×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 3/4″×16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05 7/8″×14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225 1-1/16″×12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988 1-5/16″×12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338 1-5/8″×12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.275 1-7/8″×12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625 2-1/2″×12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺纹9/16″×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 11/16″×16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.463 13/16″×16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638 1″×14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4 1-3/16″×12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.163 1-7/16″×12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513 1-11/16″×12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863 2″×12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺纹5/8″×18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.875 1-1/16″×14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16″×16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.288 7/8″×12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.225 2-1/4″×12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注：UNC粗牙螺纹系列，UNF细牙螺纹系列， UNEF超细牙螺纹系列， UN不变螺距系列布锥管螺纹基本尺寸及公差(牙形角60º) NPT螺纹代号基面上的直径螺纹长度大径中径小径有效长度管端至基面长Z1/8″×2710.2729.5198.7667 4.572 Z1/4″×1813.57212.44311.3149.5 5.080 Z3/8″×1817.05515.92614.79710.5 6.096 Z1/2″×1421.22319.77218.32113.58.028 Z3/4″×1426.56825.11723.666148.611 Z1″×11.533.22831.46129.69417.510.160 Z1.1/4″×11.541.98540.21838.4511810.688 Z1.1/2″×11.548.05446.28744.52018.510.688 Z2″×11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差(牙形角60º) M螺纹代号基本直径内螺纹外螺纹大径中径小径公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差M10X1109.3508.917+0.150+0.236+0.190+0.300-0.026-0.138-0.026-0.206M12X11211.35010.917+0.160+0.236+0.200+0.300-0.026-0.144-0.026-0.206M14X11413.35012.917+0.160+0.236+0.200+0.300-0.026-0.144-0.026-0.206M12X1.251211.18810.647+0.180+0.265+0.224+0.335-0.028-0.160-0.028-0.240M14X1.251413.18812.647+0.180+0.265+0.224+0.335-0.028-0.160-0.028-0.240M12X1.51211.02610.376+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M14X1.51413.02612.376+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M16X1.51615.02614.376+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M18X1.51817.02616.373+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M20X1.52019.02618.376+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M22X1.52221.02620.376+0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M24X1.52423.02622.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M26X1.52625.02624.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M27X1.52726.02625.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M30X1.53029.02628.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M33X1.53332.02631.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M36X1.53635.02634.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M39X1.53938.02637.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M42X1.54241.02640.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M27X22725.70124.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M30X23028.70127.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M33X23331.70130.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M36X23634.70133.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M39X23937.70136.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M42X24240.70139.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M45X24543.70142.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318M52X25250.70149.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318M60X26058.70157.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318M64X26462.70161.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318M72X27270.70169.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318。
螺纹基本尺寸对照表
+0.224
0
+0.335
0
-0.028
-0.160
-0.028
-0.240
M12X1.5
12
11.026
10.376
+0.190
0
+0.300
0
+0.236
0
+0.375
0
-0.032
-0.172
-0.032
-0.268
M14X1.5
14
13.026
12.376
+0.190
0
+0.300
0
+0.236
0
-0.360
G1.1/2″×11
47.803
46.324
44.854
+0.180
0
+0.640
0
0
-0.180
0
-0.360
0
-0.360
0
-0.360
G2″×11
59.614
58.135
56.656
+0.180
0
+0.640
0
0
-0.180
0
-0.360
0
-0.360
0
-0.360
G2.1/2”X11
布锥管螺纹基本尺寸及公差(牙形角60º)NPT
螺纹代号
基面上的直径
螺纹长度
大径
中径
小径
有效长度
管端至基面长
Z1/8″×27
10.272
9.519
8.766
7
4.572
Z1/4″×18
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常用螺纹尺寸及公差汇总表
美制NPSM螺纹（美国标准ANSI B1.20.1机械连接用直管螺纹60
度）
NPT布锥管螺纹
标号螺纹代号基面上的直径螺纹长度端面
大径大径中径小径管端
至基
面长
有效
长度
02 Z1/8*27 10.242 9.489 8.736 4.102 6.703 9.986 04 Z1/4*18 13.616 12.487 11.385 5.786 10.206 13.254 06 Z3/8*18 17.055 15.926 14.797 6.096 10.358 16.674 08 Z1/2*14 21.223 19.772 18.321 8.128 13.556 20.715 12 Z3/4*14 26.568 25.117 23.666 8.611 13.861 26.030 16 Z1*11.5 33.228 31.461 29.694 10.160 17.343 32.593 20 Z1.1/4*1.5 41.985 40.218 38.451 10.668 17.953 41.318 24 Z1.1/2*11.5 48.054 46.287 44.520 10.668 18.377 47.387
32 Z2*11.5 60.092 58.325 56.558 11.074 19.215 59.400 40 Z2.1/2*8 72.699 70.159 67.619 17.323 28.892 71.616 48 Z3*8 88.608 86.068 83.528 19.456 30.480 87.392
55度英锥管螺纹
55度英锥管螺纹
美制螺纹
可拆式芯子与套筒连接螺纹
新西兰B09内螺纹
标号你螺纹代
号大径
MIN
中径
MIN
中径
MAX
小径
MIN
小径
MAX
B-09 0.860in*14 21.844 20.683 20.841 19.522
NPTF+密封管螺纹
备注：1.表中外螺纹的完整螺纹长度包括不超过一个螺距长度的倒角
2.表中内螺纹的完整螺纹长度不包括在中径线和倒角交线外的锥口孔。
即完整螺纹长度的等于完整内螺纹加一个螺距。