1、英制普通螺纹(惠氏螺纹)-小螺纹系列(BA)名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径BAmmmmtpimm外螺纹H1mmd=Dpd2=D2d3No.14BA10.23110.40.860.720.140.75No.13BA1.20.25101.61.050.90.150.95No.12BA1.30.2890.711.130.960.171No.11BA1.50.3181.931.3151.130.1851.2No.10BA1.70.3572.571.491.280.211.35No.9BA1.90.3965.121.6651.430.2351.5No.8BA2.20.4359.
2、071.941.680.261.8No.7BA2.50.4852.922.211.920.292No.6BA2.80.5347.922.482.160.322.3No.5BA3.20.5943.052.8452.490.3552.6No.4BA3.60.6638.483.2052.810.3952.95No.3BA4.10.7334.793.663.220.443.4No.2BA4.70.8131.354.2153.730.4853.9No.1BA5.30.928.224.764.220.544.4No.0BA6125.45.44.80.655555圆圆锥锥管管螺螺纹纹型型式式和和尺尺寸寸螺纹
3、代号基本尺寸大径螺距每英寸牙数中径小径牙型高度圆弧尺寸底孔尺寸英 寸mmmmtpimm外螺纹H1rmmd=Dpd2=D2d3R 1/161/167.7230.907287.1426.5610.5810.1256.4R 1/81/89.7280.907289.1478.5660.5810.1258.4R 1/41/413.1571.3371912.30111.4450.8560.18411.2R 3/83/816.6621.3371915.80614.950.8560.18414.75R 1/21/220.9551.8141419.79318.6311.1620.24918.25R 3/43/4
4、26.4411.8141425.27924.1171.1620.24923.75R 1133.2492.3091131.7730.2911.4790.31730R 1 1/41 1/441.912.3091140.43138.9521.4790.31738.5R 1 1/21 1/247.8032.3091146.32444.8451.4790.31744.5R 2259.6142.3091158.13556.6561.4790.31756R 2 1/22 1/275.1842.3091173.70572.2261.4790.31771R 3387.8842.3091186.40584.926
5、1.4790.31785.5R 44113.032.30911111.551110.0721.4790.317110.5R 55138.432.30911136.951135.4721.4790.317136R 66163.832.30911162.351160.8721.4790.317161.5制制惠惠氏氏螺螺纹纹的的型型式式尺尺寸寸英制普通螺纹(惠氏螺纹)-粗牙(BSW)名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径Wwmmmmtpimm外螺纹H1mmd=Dpd2=D2d31/16BSW1.5870.423601.3151.050.271.153/32BSW2.3810.529
6、482.0411.7030.3381.91/8BSW3.1750.635402.7682.3620.4062.55/32BSW3.9690.793323.4592.9520.5073.23/16BSW4.7621.058244.0843.4070.6773.77/32BSW5.5561.058244.8784.2010.6774.51/4BSW6.351.27205.5374.7240.8135.15/16BSW7.9381.411187.0346.1310.9046.53/8BSW9.5251.588168.5097.4921.0177.97/16BSW11.1131.814149.9518
7、.7891.1629.21/2BSW12.72.1171211.3459.991.35510.45/8BSW15.8762.3091114.39712.9181.47913.43/4BSW19.0512.541017.42415.7981.62716.257/8BSW22.2262.822920.41918.6111.80719.251BSW25.43.175823.36821.3352.033221 1/8BSW28.5763.629726.25323.9292.32424.51 1/4BSW31.7513.629729.42827.1042.32427.251 3/8BSW34.9264.
8、233632.21529.5052.71130.251 1/2BSW38.14.233635.39132.682.71133.51 5/8BSW41.2775.08538.02434.7713.25335.51 3/4BSW44.4525.08541.19937.9463.25338.51 7/8BSW47.6275.6454 1/244.01240.3983.61441.252BSW50.8025.6454 1/247.18743.5733.61444.52 1/4BSW57.1526.35453.08649.024.066502 1/2BSW63.5026.35459.43655.374.
9、066562 3/4BSW69.8537.2573 1/265.20560.5584.64761.53BSW76.2037.2573 1/271.55666.9094.647683 1/4BSW82.5537.8163 1/477.54872.5445.00573.753 1/2BSW88.9037.8163 1/483.89978.8945.005803 3/4BSW95.2548.467389.83284.415.42285.54BSW101.6048.467396.18290.765.422924 1/4BSW107.9548.8352 7/8102.29796.6395.657984
10、1/2BSW114.3048.8352 7/8108.647102.995.657104.24 3/4BSW120.6659.2372 3/4114.74108.6255.9151105BSW127.0059.2372 3/4121.09115.1765.915116.55 1/4BSW133.3559.6772 5/8127.159120.9636.196122.55 1/2BSW139.7059.6772 5/8133.509127.3136.196128.55 3/4BSW146.05510.162 1/2139.549133.0436.506134.56BSW152.40610.162
11、 1/2145.9139.3946.506141英英制制普普通通螺螺纹纹 -细细牙牙 -BSFBSF英制普通螺纹(惠氏螺纹)-细牙(BSW)名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径BSFmmmmtpimm外螺纹H1mmd=Dpd2=D2d33/16BSF4.7630.794324.2553.7470.50847/32BSF5.5560.907284.9754.3940.5814.61/4BSF6.350.977265.7255.10.6255.39/32BSF7.1420.977266.5185.8930.6256.15/16BSF7.9381.156227.1996.4590
12、.7396.83/8BSF9.5251.27208.7127.8990.8138.37/16BSF11.1131.4111810.2099.3040.9049.71/2BSF12.71.5881611.68410.6681.01711.19/16BSF14.2881.5881613.27212.2561.01712.75/8BSF15.8751.8141414.71213.5491.1621411/16BSF17.4631.8141416.315.1371.16215.53/4BSF19.052.1171217.69316.3361.35516.7513/16BSF20.6382.117121
13、9.28117.9241.35518.257/8BSF22.2252.3091120.74719.2691.47919.751.00BSF25.42.541023.77422.1481.62722.751 1/8BSF28.5752.822926.76924.9631.80726.51 1/4BSF31.752.822929.94428.1381.80728.751 3/8BSF34.9253.175832.89330.8612.03331.51 1/2BSF38.13.175836.06834.0362.03334.51 5/8BSF41.2753.175839.24337.2112.033
14、381 3/4BSF44.453.629742.12639.8022.32440.52 BSF50.83.629748.47646.1522.324472 1/4BSF57.154.234654.4451.732.711532 1/2BSF63.54.234660.7958.082.711592 3/4BSF69.854.234667.1464.432.711-3 BSF76.25.08572.94669.6923.253-3 1/4BSF82.555.08579.29676.0423.253-3 1/2BSF88.95.6454 1/285.28581.673.614-3 3/4BSF95.
15、255.6454 1/291.63588.023.614-4 BSF101.65.6454 1/297.98594.373.614-4 1/4BSF107.956.354103.88699.8224.066-5555圆圆柱柱管管螺螺纹纹的的型型式式和和尺尺寸寸British Pipe Thread(惠氏管螺纹)-圆柱(BSPP/BSPF)螺纹代号基本尺寸大径螺距每英寸牙数中径小径牙型高度底孔尺寸mmmmtpimm外螺纹H1mmd=Dpd2=D2d3G 1/81/89.7280.907289.1478.5660.5818.7G 1/41/413.1571.3371912.30111.4450.8
16、5611.6G 3/83/816.6621.3371915.80614.950.85615G 1/21/220.9551.8141419.79318.6311.16219G 5/85/822.9111.8141421.74920.5871.16220.75G 3/43/426.4411.8141425.27924.1171.16224.5G 7/87/830.2011.8141429.03927.8771.16228G 1133.2492.3091131.7730.2911.47930.5G 1 1/81 1/837.8972.3091136.41834.9391.47935G 1 1/41
17、1/441.912.3091140.43138.9521.47939.5G 1 3/81 3/844.3232.3091142.84441.3651.47941.5G 1 1/21 1/247.8032.3091146.32444.8451.47945G 1 3/41 3/453.7462.3091152.26750.7881.47951G 2259.6142.3091158.13556.6561.47957G 2 1/42 1/465.712.3091164.23162.7521.47963G 2 1/22 1/275.1842.3091173.70572.2261.47972.5G 2 3
18、/42 3/481.5342.3091180.05578.5761.47979G 3387.8842.3091186.40584.9261.47985.5G 3 1/43 1/493.982.3091192.50191.0221.47991G 3 1/23 1/2100.332.3091198.35197.3721.47997.75G 3 3/43 3/4106.682.30911105.201103.7221.479104G 44113.032.30911111.55110.0721.479110.5G 4 1/24 1/2125.732.30911124.251122.7721.47912
19、3G 55138.432.30911136.951135.4721.479136G 5 1/25 1/2151.132.30911149.651148.1721.479148.5G 66163.832.30911162.351160.8721.479161.5RC2英寸锥管螺纹，每英寸11牙，螺距=25.4/11即2.309，牙高（深）=2.3090.64即1.479，锥度是固定的即1：16R等于1/32乘以长度1/32意思是，锥螺纹的锥度是1：16，单边就是1：32长度意思是：定位点加有效长度比如我定位3.0，有效长度是12.0R=1/32 X（3+12）=0.46875 1 1、密密封封管
20、管螺螺纹纹（R R）英英制制密密封封管管螺螺纹纹的的基基本本尺尺寸寸及及其其公公差差配配合合方方式式英英制制密密封封管管螺螺纹纹有有两两种种配配合合方方式式：圆圆柱柱内内螺螺纹纹与与圆圆锥锥外外螺螺纹纹组组成成“柱柱/锥锥”配配合合；圆圆锥锥内内螺螺纹纹与与圆圆锥锥外外螺螺纹纹组组成成“锥锥/锥锥”配配合合.欧欧洲洲国国家家主主要要采采用用“柱柱/锥锥”配配合合螺螺纹纹；而而欧欧洲洲以以外外国国家家则则主主要要采采用用“柱柱/锥锥”配配合合螺螺纹纹.两两种种螺螺纹纹的的检检验验量量规规存存在在一一定定不不同同；目目前前的的ISOISO英英制制密密封封管管螺螺纹纹量量规规标标准准（ISOISO
21、7-27-2：20002000）是是按按“柱柱/锥锥”配配合合体体系系设设计计的的.编编辑辑本本段段密密封封管管螺螺纹纹的的标标记记英英制制密密封封管管螺螺纹纹的的完完整整标标记记由由螺螺纹纹特特征征代代号号、螺螺纹纹尺尺寸寸代代号号和和旋旋向向代代号号组组成成.英英制制密密封封圆圆柱柱内内螺螺纹纹的的特特征征代代号号为为：RPRP；英英制制密密封封圆圆锥锥内内螺螺纹纹的的特特征征代代号号为为：RCRC；英英制制密密封封圆圆锥锥外外螺螺纹纹的的特特征征代代号号为为：R1R1（与与英英制制密密封封圆圆柱柱内内螺螺纹纹配配合合使使用用）；R2R2（与与英英制制密密封封圆圆锥锥内内螺螺纹纹配配合合使
22、使用用）；左左旋旋螺螺纹纹的的旋旋向向代代号号为为LHLH；右右旋旋螺螺纹纹的的旋旋向向代代号号省省略略不不标标.对对密密封封管管螺螺纹纹，利利用用RP/R1RP/R1，RC/R2RC/R2分分别别表表示示“柱柱/锥锥”和和“锥锥/锥锥”螺螺纹纹副副.2 2、非非密密封封管管螺螺纹纹英英制制非非密密封封管管的的基基本本尺尺寸寸及及其其极极限限偏偏差差标标记记:英英制制非非密密封封管管螺螺纹纹的的完完整整标标记记由由螺螺纹纹特特征征代代号号，螺螺纹纹尺尺寸寸代代号号，中中径径公公差差等等级级代代号号和和旋旋向向代代号号组组成成.英英制制非非密密封封圆圆柱柱螺螺纹纹的的特特征征代代号号为为：G G
23、对对英英制制非非密密封封圆圆柱柱内内螺螺纹纹，其其中中径径公公差差等等级级代代号号省省略略不不标标；而而英英制制非非密密封封圆圆柱柱外外螺螺纹纹的的中中径径公公尺尺等等级级代代号号分分别别为为A A和和B.B.左左旋旋螺螺纹纹的的旋旋向向代代号号为为LHLH；右右旋旋螺螺纹纹的的旋旋向向代代号号省省略略不不标标.当当表表示示英英制制非非密密封封管管螺螺纹纹的的螺螺纹纹副副时时，仅仅标标注注外外螺螺纹纹的的标标记记代代号号.示示例例：尺尺寸寸代代号号为为2 2的的右右旋旋，非非密密封封圆圆柱柱内内螺螺纹纹：G2G2尺尺寸寸代代号号为为3 3的的A A级级，右右旋旋，非非密密封封圆圆柱柱外外螺螺纹
24、纹：G3AG3A尺尺寸寸代代号号为为4 4的的B B级级，左左旋旋，非非密密封封圆圆柱柱外外螺螺纹纹：G4G4 B-LHB-LH尺尺寸寸代代号号为为2 2的的右右旋旋，非非密密封封圆圆柱柱内内螺螺纹纹与与A A级级圆圆柱柱外外螺螺纹纹组组成成的的螺螺纹纹副副：G2AG2A加加工工内内孔孔螺螺纹纹的的是是管管螺螺纹纹丝丝锥锥 加加工工外外螺螺纹纹的的有有板板牙牙。其其他他：5555圆圆锥锥管管螺螺纹纹的的转转化化5555圆圆锥锥管管螺螺纹纹，是是指指螺螺纹纹的的牙牙型型角角为为5555、螺螺纹纹具具有有1 1：1616的的锥锥度度。该该系系列列螺螺纹纹在在世世界界上上应应用用广广泛泛，它它的的代代号号，各各国国规规定定不不同同。中中国国 英英国国 法法国国 日日本本 isoiso代代号号 ZGZG R R（外外）G G PTPT R RR(R(外外螺螺纹纹)RcRc（内内）R R R R RcRc6060圆圆锥锥管管螺螺纹纹的的转转化化6060圆圆锥锥管管螺螺纹纹是是指指牙牙型型角角为为6060、螺螺纹纹锥锥度度为为1 1：1616的的管管螺螺纹纹，此此系系列列螺螺纹纹在在我我国国机机床床行行业业和和美美国国、前前苏苏联联应应用用。它它的的代代号号，我我国国过过去去规规定定为为K K，后后来来规规定定为为Z Z，现现在在改改为为NPT.NPT.
