螺纹尺寸公差

1、螺纹尺寸公差作者:日期:a/ XH=-P=0.866025PHi= ?W05413P8H2=壬 H 二0.61343Pd2=D2=d-0.64952P di =d-2H=d-1.22687P r 応氏二0.14434P6代号（大径）d = D螺距P螺纹中径d2 = D2外螺纹小径d1内螺纹小径D1外螺纹全齿高H2配合齿高H1螺纹中径尺寸（6H公差带级别）丝锥螺纹中径（H2公差带级别为例）minmaxminmaxM30.52.6722.3872.4590.3070.2712.6752.7752.6992.714M3.50.63.1102.7642.8500.3680.3253.1103.2223

2、.1373.155M40.73.5453.1413.2420.4290.3793.5453.6633.5743.593M50.84.4804.0194.1340.4910.4334.4804.6054.5105.530M61.05.3504.7734.9370.6130.5415.3505.5005.3855.408M71.06.3505.7735.9370.6130.5416.3506.5006.3856.408M81.257.1886.4666.6470.7670.6777.1887.3487.2267.251M101.59.0268.1608.3760.9200.8129.0269.20

3、69.0689.096M121.7510.8639.85310.1061.0740.94710.86311.06310.91110.943M142.012.70111.54611.8351.2271.08312.70112.91312.75212.786M162.014.70113.54613.8351.2271.08314.70114.91314.75214.786M182.516.37314.93315.2941.5341.35316.37616.60016.43016.466M202.518.37616.93317.2941.5341.35318.37618.60018.43018.46

4、6M222.520.37618.93319.2941.5341.35320.37620.60020.43020.466MF米制细牙螺纹基本牙型与尺寸和公差带円囉纹H=-P=O.866025 卩Hi= |-H=0.5413PH2=吕仁 P d2=j2=d_0.64r/ di=d- =d-1.22687P r k=0.14434P代号（大径）d = D螺距P螺纹中径d2 =D2外螺纹小径d1内螺纹小径D1外螺纹全齿高H2配合齿高H1螺纹中径尺寸（6H公差带级别）丝锥螺纹中径（H2公差带级别为例）minmaxminmaxM30.352.7732.5712.6210.2150.1892.7732.86

5、32.7942.809M3.50.352.2733.0713.1210.2150.1893.2733.3633.2943.309M40.53.6753.3873.4590.3070.2713.6753.7753.6993.714M50.54.6754.3874.4590.3070.2714.6754.7754.6994.714M60.755.5135.0805.1880.4600.4065.5135.6455.5455.566M81.07.3506.7736.9170.6130.5417.3507.5007.3857.408M101.09.3508.7738.9170.6130.5419.35

6、09.5009.3859.408M101.259.1888.4668.6470.7670.6779.1889.3489.2269.251M121.2511.18810.46610.6470.7670.67711.18811.36811.22611.251M121.511.02610.16010.3760.9200.81211.02611.21611.06811.096M141.513.02612.16012.3760.9200.81213.02613.21613.06813.096M161.515.02614.16014.3760.9200.81215.02615.21615.06815.09

7、6M181.517.02616.16016.3760.9200.81217.02617.21617.06817.096M182.016.70115.54615.8351.2271.08316.70116.91316.75216.786M201.519.02618.16018.3760.9200.81219.02619.21619.06819.096M202.018.70117.54617.8351.2271.08318.70118.91318.75218.786M221.521.02620.16020.3760.9200.81221.02621.21621.06821.096M222.020.

8、70119.54619.8351.2271.08320.70120.91320.75220.786/r工*UNC统一粗牙螺纹基本牙型与尺寸和公差带H二宵Hi =2 P=0.866025P 二 H二！15413PO醫H=0&创3d2=D2=d-0.6/1952P dd-2H=d-1,2268/ ；丄=：.4心!代 号（螺纹直径一25.4m内牙数）螺距P螺纹大径d =D螺纹中径d2=D2内螺纹小径D1外螺纹小径d1螺纹中径尺寸丝锥螺纹中径2B 3Bmin2B max3B maxminmaxNO.5 400.6353.1752.7462.4872.3952.7642.8472.8272.7762.7

9、89NO.6 320.7943.5052.9902.6472.5322.9903.0843.0583.1053.028NO.8 320.7944.1663.6503.3073.1933.6503.7463.7213.6753.688NO.10 241.0584.8264.1383.6803.5284.1384.2474.2194.9634.176NO.12 241.0585.4864.7984.3414.1884.7984.9104.8824.8234.836UNC1/4 -201.2706.3505.5244.9764.7935.5245.6465.6165.5755.588UNC5/16-

10、181.4117.9387.0216.4116.2057.0217.1557.1207.0717.084UNC3/8 -161.5889.5258.4947.8057.5778.4948.6398.6038.5458.557UNC7/16-141.81411.1129.9349.1498.8879.93410.08910.0519.9859.997UNC1/2 -131.95412.70011.43010.58410.30211.43011.59511.55211.48111.494UNC9/16-122.11714.28812.91311.99611.69212.91313.08613.04

11、312.96412.977UNC5/8 -112.30915.87514.37613.37613.04314.37614.55914.51414.42714.440UNC3/4 -102.54019.05017.39916.22915.93317.39917.59517.54417.45017.463UNC7/8 -92.82222.22520.39019.16918.76320.39120.59920.54620.45520.467UNC1 -83.17525.40023.33821.96321.50423.33823.56123.50523.40123.414UNF统一细牙螺纹基本牙型与尺

12、寸和公差带内球纹外螺纹H=-P=0+866025 Hi=寻 H二05413P 出二H=O.6I33 也二山二 d-064952P 小二什 _?H 二d-L22687P 瓷%二0.1443仆 0代 号（螺纹直径一25.4m内牙数）螺距P螺纹大径d =D螺纹中径d2=D2内螺纹小径D1外螺纹小径d1螺纹中径尺寸丝锥螺纹中径（2级）2B 3Bmin2B max3B maxminmaxNO.5 440.5773.1752.7992.5502.4662.7992.8802.8602.8122.824NO.6 400.6353.5053.0942.8172.7253.0943.1803.1573.1083

13、.119NO.8 360.7064.1663.7083.4013.2993.7083.8003.7773.7213.734NO.10 320.7944.8264.3103.9763.8534.3104.4094.3844.3364.348NO.12 280.9075.4864.8974.5034.3744.8975.0044.9764.9234.935UNC1/4 -280.9076.3505.7615.3675.2375.7615.8705.8425.7995.812UNC5/16 -241.0587.9387.2496.7926.6407.2497.3717.3417.2877.300UN

14、C3/8 -241.0589.5258.8378.3798.2278.8378.9618.9318.8758.887UNC7/16 -201.27011.11210.2879.7389.55510.28710.42410.39110.33810.351UNC1/2 -201.27012.70011.87411.32611.14311.87412.01711.98111.92511.938UNC9/16-181.41114.28813.37112.76112.55513.37113.52013.48213.42113.434UNC5/8 -181.41115.87514.95814.34814.

15、14314.95815.11015.07215.00915.022UNC3/4 -161.58819.05018.01917.33017.10218.01918.18418.14318.07018.082UNC7/8 -141.81422.22521.04620.26220.00021.04621.22421.18121.11021.123UNC1 -122.11725.40024.02623.10922.80424.02624.21924.17124.08924.10225.4?卩25.4mmrtnH=0.96049P1H1=0.640327POJOIIr=0.137329Ppz pH/6=

16、0J60082外螺纹螺纹代号每 25.4mm内牙数螺距P mm螺纹大径d=D mm螺纹中径d2=D2mm螺纹小径d仁D 1 mmH1 mmR mm螺纹中径公差带丝锥螺纹中径公差带minmaxminmaxG 1/8280.9079.7289.1478.5660.5810.1259.1479.2549.1779.194G 1/4191.33713.14712.30111.4450.8560.18412.30112.42612.36612.356G 3/8191.33716.66215.80614.9500.8560.18415.80615.93315.80115.861G 1/2141.81420

17、.95519.79318.6311.1620.24919.79319.93519.82819.848G 5/8141.81422.91121.74920.5871.1620.24921.74921.89121.78421.804G 3/4141.81426.44125.27924.1171.1620.24925.27925.42125.31425.334G 7/8141.81432.20129.03927.8771.1620.24929.03929.18129.07429.094G 1112.30933.24931.77030.2911.4790.31731.77031.95031.81531

18、.839G 1-1/8112.30937.89736.41834.9391.4790.31736.41836.59836.46336.487G 1-1/4112.30941.91040.43138.9521.4790.31740.43140.61140.47640.500G 1-3/8112.30944.32342.84441.3651.4790.31742.84443.02442.88942.913G 1-1/2 112.30947.80346.32444.8451.4790.31746.32446.50446.37446.398G 1-3/4112.30953.74652.26750.7881.4790.31752.26752.44752.32752.354G 2 112.30959.61458.13556.6561.4790.31758.13558.31558.19558.222丝锥图标与符号说明：螺纹类型：M米制粗牙普通螺纹MF米制细牙普通螺纹UNC统一粗牙螺纹UNF 统一细牙螺纹G（ BSP）非螺纹密封的管螺纹W（ BSW）