常用公制螺纹基本尺寸和极限尺寸表

从到minmaxminmax从到maxminmaxminmaxmin 31.54.532.6752.7752.4592.59931.54.52.9802.8742.6552.5802.3672.256 3.51.753.53.1103.2222.8503.0103.51.753.4793.3543.0893.0042.7432.615 42643.5453.6633.2423.4224263.9783.8383.5233.4333.1192.979 52.57.554.4804..6054.1344.33452.57.54.9764.8264.4564.3613.9953.842 63965.3505.5004.9175.1

公制外螺纹（6g）常用规格极限尺寸表（粗牙） 小径 最大最小最大最小最大最小最大 m3×0.52.9802.8742.6552.5802.4392.602.63 m4×0.73.9783.8383.5233.4333.2203.473.50 m5×0.84.9764.8264.4564.3614.1104.404.43 m6×15.9745.7945.3245.2124.8915.265.29 m8×1.257.9727.7607.1607.0426.6197.107.14 m10×1.59.9689.7328.9948.8628.3448.928.96 m12×1.7511.96611.70110.82910.67910.07210.7510.79 m14×213.9621

最小最大最小最大最小最大 m3x0.56g2.8742.982.582.6552.4392.62.63 m4x0.76g3.8383.9783.4333.5233.223.473.5 m5x0.86g4.8264.9764.3614.4564.114.44.43 m6x1.06g5.7945.9745.2125.3244.8915.265.29 m8x1.256g7.767.9727.0427.166.6197.17.14 m10x1.56g9.7329.9688.8628.9948.3448.928.96 m12x1.756g11.70111.96610.67910.82910.07210.7510.79 m14x2.06g13.68213.96212.503

精心整理 常用普通螺纹基本尺寸 标记示例： m24（公称直径为24mm的粗牙普通螺纹）； m24x1.5（公称直径为24mm，螺距为1.5mm的细牙普通螺纹）； m24x1.5左（公称直径为24mm，螺距为1.5mm，方向为左旋的细牙普通螺纹）. 公称直径d，d螺距 p 中径 d2或d2 小径 d1或d1第一系列第二系列 1 0.250.8380.729 0.20.8700.783 1.1 0.250.9380.829 0.20.9700.883 1.2 0.251.0380.929 0.21.0700.983 1.4 0.31.2051.075 0.21.2701.183 1.6 0.351.3731.221 0.21.4701.383 1.8

maxminmaxminmaxminmaxmin m31.54.56g2.9802.8742.6552.5806h2.7752.6752.5902.495 m4266g3.4783.7493.5233.4336h3.6633.5453.4223.242 m52.57.56g4.9794.7604.4564.3616h4.6054.4804.3344.134 7g4.9764.7404.4564.3067h4.6404.4804.3844.134 m6396g5.9745.7325.3245.2126h5.5005.3505.1534.917 7g5.9745.6945.3245.1447h5.5405.3505.2174.917 m8412

公称直径d螺距t中径d2内径d1工作高度h圆角半径r 10.250.8380.7290.1350.036 1.10.250.9380.8290.1350.036 1.20.251.0380.920.1350.036 1.40.31.2051.0750.1620.043 1.60.351.3731.2210.1890.051 1.80.351.5731.4210.1890.051 20.41.741.5670.2170.058 2.20.451.9081.7130.2440.065 2.50.452.2082.0130.2440.065 30.52.6752.4590.2710.072 3.50.63.112.850.3250.087 40.73.5453.2420

t192－1981、gb/t193－1981、gb/t196－1981) 1-0917:04:36]浏览人次：[84] www.***.***马棚网 普通螺纹基本牙型及其基本尺寸(gb/t192－1981、gb/t193－1981、gb/t196－1981) 第一系列第二系列第三系列 0.25*0.8380.729 0.20.870.738 0.25*0.9380.829 0.20.970.883 0.25*1.0380.929 0.21.070.983 0.3*1.2051.075 0.21.271.183 0.35*1.3731.221 0.21.471.383 0.35*1.5731.421 0.21.671.583 0.4*1.741.567 0.251.8381.729 0.

. . 螺纹基本尺寸对照表 （以及螺纹底孔相关尺寸） 参照机械设计师首册编制 opmsm 2005年7月 . . 螺纹代号 threadcode 一、英制螺纹（螺纹牙型角55度） bsw——英国标准惠氏螺纹（粗牙） bsf——英国标准惠氏螺纹（细牙） g——直管螺纹(外螺纹分a、b两级即在螺纹中径公差有所区别，丝锥 分g、g-d)非密封性螺纹 r——锥管外螺纹（旧代号zg；kg） rc——锥管内螺纹（旧代号zg；kg） 二、美制螺纹（螺纹牙型角60度） unc——统一制粗牙螺纹（代替nc） unf——统一制细牙螺纹（代替nf） unef——统一制超细牙螺纹 un——统一制不变螺距螺纹 uns——统一制特殊螺纹 三、美制螺纹（螺纹牙型角60度） npt——一般用途锥管螺纹（旧代号z、k）（斜角为1°47'即1：16） npsc——管接头直

8 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″× 28 9.7289.1478.566 +0.170+0.282 0 0 -0.107 0 -0.214 0 -0.214 0 -0.214 g1/4″× 19 13.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250 g3/8″× 19 16.66215.80614.950 +0.125 0 +0.445 0 0 -0.125 0 -0.250 0 -0.250 0 -0.250 g1/2″× 14 20.95519.79318.631

大径中径小径牙高大径中径小径牙高 10.2510.8380.7290.135121.751210.86310.1060.947 1.10.251.10.9380.8290.1351421412.70111.8351.083 1.20.251.21.0380.9290.1351621614.70113.8351.083 1.40.31.41.2051.0750.162182.51816.37615.2941.353 1.60.351.61.3731.2210.189202.52018.37617.2941.353 1.80.351.81.5731.4210.189222.52220.37619.2941.353 20.421.741.567

公制外螺纹（6g）常用规格极限尺寸表（粗牙） 小径 最大最小最大最小最大最小最大 m3×0.52.9802.8742.6552.5802.4392.602.63 m4×0.73.9783.8383.5233.4333.2203.473.50 m5×0.84.9764.8264.4564.3614.1104.404.43 m6×15.9745.7945.3245.2124.8915.265.29 m8×1.257.9727.7607.1607.0426.6197.107.14 m10×1.59.9689.7328.9948.8628.3448.928.96 m12×1.7511.96611.70110.82910.67910.07210.7510.79 m14×213.9621

螺纹公制尺寸表

普通螺纹基本尺寸及公差 0.190.30.30.5 0000 0.2240.3750.30.5 0000 0.2240.3750.30.5 0000 0.2360.3750.30.5 0000 0.2360.3750.30.5 0000 0.2360.3750.30.5 0000 0.250.3750.3350.5 0000 0.2360.3750.3350.5 0000 0.280.50.2650.5 0000 0.280.50.3750.6 0000 0.280.50.3750.6 0000 0.30.50.3750.6 0000 0.3750.6 00 φ108.051φ106.752 m110*3

普通螺纹的基本尺寸 公称直径 （大径） d，d 螺距p 中径 d2，d2 小径 d1，d2 ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ ψ 公称直径 （大径） d，d 螺距p 中径 d2，d2 小径 d1，d2 10.250.8380.729 20 1.519.02618.376 1.20.251.0380.929218.70117.835 1.40.31.2051.0752.518.37617.294 1.60.351.3731.221 22 1.521.02620.376 20.41.7401.5672.520.37619.294 2.50.452.2082.013 24 222.70121.835 30.52.

螺纹基本尺寸及公差 尺寸 代号 每25.4mm 内 的牙数n 螺距p 牙高 h 圆弧半径 r≈ 基面上的直径 基准长度 有效螺纹 长度 基准长度圆锥内螺 纹基面轴 向位移的 极限偏差 ±t2/2 装配 余量 有效螺纹长度 不小于 大径d=d中径d2=d2小径d1=d1 基 本 极限偏差±t1/2 最大最小余数圈数基本最大最小 圈数圈数 1∕16280.9070.5810.1257.7237.1426.56146.540.914.93.11.111∕42.523∕46.57.45.6 1∕8280.9070.5810.1259.7289.1478.56646.540.914.93.11.111∕42.523∕46.57.45.6 1∕4191.3370.8560.1

梯形螺纹基本尺寸

螺纹通止规基本尺寸与校正

公制外螺纹(6g)常用规格极限尺寸表(细 牙) 公称直径×螺距 螺纹精 度等级 大径中径小径螺胚直径 最大最小最大最小最大最小最大 m3x0.35 6g 2.9812.8962.7542.6872.602 2.712.73 m4x0.5 3.9803.8743.6553.5803.439 3.603.63 m5×0.5 4.9804.8744.6554.5804.439 4.604.63 m6×0.75 5.9785.8385.4915.3915.166 5.425.46 m8×0.75 7.9787.8387.4917.3917.166 7.427.46 m8×1 7.9747.7947.3247.2126.891 7.267.29 m10×0.75 9.9789.838

大径 最小最大最小最大最小 m3×0.3532.8632.7732.7212.621 m4×0.543.7753.6753.5593.459 m5×0.554.7754.6754.5994.459 m6×0.7565.6455.5135.3785.188 m8×0.7587.6457.5137.3787.188 m8×187.57.357.1536.917 m10×0.75109.6459.5139.3789.188 m10×1108.59.359.1538.917 m10×1.25109.3489.1888.9128.647 m12×11211.5111.3511.15310.917 m12×1.251211.36811.18810.91210.647 m12×1.51

公制外螺纹(6g)常用规格极限尺寸表(粗牙) 公称直径×螺 距 螺纹精度等 级 大径中径小径螺胚直径 最大最小最大最小最大最小最大 m3×0.5 6g 2.9802.8742.6552.5802.439 2.602.63 m4×0.7 3.9783.8383.5233.4333.220 3.473.50 m5×0.8 4.9764.8264.4564.3614.110 4.404.43 m6×1 5.9745.7945.3245.2124.891 5.265.29 m8×1.25 7.9727.7607.1607.0426.619 7.107.14 m10×1.5 9.9689.7328.9948.8628.344 8.928.96 m12×

从到minmaxminmax从到maxminmaxminmaxmin 31.54.532.6752.7752.4592.59931.54.52.9802.8742.6552.5802.3672.256 3.51.753.53.1103.2222.8503.0103.51.753.4793.3543.0893.0042.7432.615 42643.5453.6633.2423.4224263.9783.8383.5233.4333.1192.979 52.57.554.4804..6054.1344.33452.57.54.9764.8264.4564.3613.9953.842 63965.3505.5004.9175.1

常用公制螺纹规尺寸标准对照表