螺纹尺寸和公差

1、M米制粗牙螺纹基本牙型与尺寸和公差带H二公P=0.866025PHi=-|-H=0.5413PoH2=骑H=0.61343Pd2=D2=d-0.64952Pdi=d-2H=d-1.22687PrtL=0.14434-0d=D?距P螺纹中径d2=D2dlDl外螺纹全齿商H2配合齿扁Hl螺纹中蛊尺寸（6H公差帚级别）丝借螺纹中径（H2公差帚级别为例）minmaxminmaxM30.52.6722.3872.4590.3070.2712.6752.7752.6992.714M3.50.63.1102.7642.85003680.3253.1103.2223.1373.155M40.73.5453.1

2、413.2420.4290.3793.5453.6633.5743.593M50.84.4804.0194.1340.4910.4334.4804.6054.5105.530M61.05.3504.7734.9370.6130.5415.3505.5005.3855.408M71.06.3505.7735.9370.6130.5416.3506.5006.3856.408M81.257.1886.4666.6470.7670.6777.1887.3487.2267.251MIO1.59.0268.160&3760.9200.8129.0269.2069.0689.096Ml21.7510.86

3、39.85310.1061.0740.94710.86311.06310.91110.943M142.012.70111.54611.8351.2271.08312.70112.91312.75212.786Ml62.014.70113.54613.8351.2271.08314.70114.91314.75214.786Ml82.516.37314.93315.2941.5341.35316.37616.60016.43016.466M202.518.37616.93317.2941.5341.35318.37618.60018.43018.466M222.520.37618.93319.2

4、941.5341.35320.37620.60020.43020.466MF米制细牙螺纹基本牙型与尺寸和公差带内螺纹d=D螺距P螺纹中咎d2=D2dl内翊各D1外螺纹全齿商H2配合齿高H1螺纹中径尺寸（6H公差常级别）丝删纹中径（H2公差带级别为例）minmaxminmaxM30.352.7732.5712.6210.2150.1892.7732.8632.7942.809M3.50.352.2733.0713.1210.2150.1893.2733.3633.2943.309M40.53.6753.3873.4590.3070.2713.6753.7753.6993.714M50.54.67

5、54.3874.4590.3070.2714.6754.7754.6994.714M60.755.5135.0805.1880.4600.4065.5135.6455.5455.566M81.07.3506.7736.9170.6130.5417.3507.5007.3857.408M101.09.3508.7738.9170.6130.54193509.5009.3859.408M101.259.1888.4668.6470.7670.6779.1889.3489.2269.251Ml21.2511.18810.46610.6470.7670.67711.18811.36811.22611.

6、251M121.511.02610.16010.3760.9200.81211.02611.21611.06811.096M141.513.02612.160123760.9200.81213.02613.21613.06813.096M161.515.02614.16014.3760.9200.81215.02615.21615.06815.096Ml81.517.02616.16016.3760.9200.81217.02617.21617.06817.096Ml82.016.70115.54615.8351.2271.08316.70116.91316.75216.786M201.519

7、.02618.16018.3760.9200.81219.02619.21619.06819.096M202.018.70117.54617.83512271.08318.70118.91318.75218.786M221.521.02620.16020.3760.9200.81221.02621.21621.06821.096M222.020.70119.54619.83512271.08320.70120.91320.75220.786DUNC统一粗牙螺纹基本牙型与尺寸和公差带H=-P=0.866025P曰=寻H=0.5413PH2=H=0.61343Pd2=D2=d-0.64952Pdi

8、=d-2H=d-1.22687Pr乞,=0.14434P代号（螺纹直径一25.4m内牙数）螺距Pd=D螺纹中径32=02斓纹4馅D1dl螺纹中锤尺寸丝律螺纹中径2B3Bmin2Bmax3BmaxminmaxNO.5400.6353.1752.7462.4872.3952.7642.8472.8272.7762.789NO.6320.7943.5052.9902.6472.5322.9903.0843.0583.1053.028NO.8320.7944.1663.6503.3073.1933.6503.7463.7213.6753.688NO.1()241.0584.8264.1383.6803

9、.5284.1384.2474.2194.9634.176NO.12241.0585.4864.7984.3414.1884.7984.9104.8824.8234.836UNC1/4201.2706.3505.5244.9764.7935.5245.6465.6165.5755.588UNC5/16181.4117.9387.0216.4116.2057.0217.1557.1207.0717.084UNC3/8161.5889.5258.4947.8057.5778.4948.6398.6038.5458.557UNC7/16141.81411.1129.9349.1498.8879.93

10、410.08910.0519.9859.997UNC1/2131.95412.70011.43010.58410.30211.43011.59511.55211.48111.494UNC9/16122.11714.28812.91311.99611.69212.91313.08613.04312.96412.977UNC5/8H-112.30915.87514.37613.37613.04314.37614.55914.51414.42714.440UNC3/4102.54019.05017.39916.22915.93317.39917.59517.54417.45017.463UNC7/8

11、92.82222.22520.39019.16918.76320.39120.59920.54620.45520.467UNClH-83.17525.40023.33821.96321.50423.33823.56123.50523.40123.414p外噱纹UNF统一细牙螺纹基本牙型与尺寸和公差带内喋纹H=-P=0.866025PHi=?H=0.5413PH2二抹H二0.63刁d2=D2=d-0.64952Pdi=d-2H=d-1.22687Pr心牛=0.14434P代号（螺纹直径一螺距螺纹大咎螺纹中径内罐勿轻夕噪沁螺纹中径尺寸轴细径（2级）25.4m内牙数)Pd=Dd2=D2DIdl2B3

12、BminZBmax3BmaxminmaxNO.5440.5773.1752.7992.5502.4662.7992.8802.8602.8122.824NO.6400.6353.5053.0942.8172.7253.0943.1803.1573.1083.119NO.8360.7064.1663.7083.4013.2993.7083.8003.7773.7213.734NO.10320.7944.8264.3103.9763.8534.3104.4094.3844.3364.348NO.12280.9075.4864.8974.5034.3744.8975.0044.9764.9234.9

13、35UNC1/4280.9076.3505.7615.3675.2375.7615.8705.8425.7995.812UNC5/16241.0587.9387.2496.7926.6407.2497.3717.3417.2877.300UNC3/8241.0589.5258.8378.3798.2278.8378.9618.9318.8758.887UNC7/16201.27011.11210.2879.7389.55510.28710.42410.39110.33810.351UNC1/2201.27012.70011.87411.32611.14311.87412.01711.98111

14、.92511.938UNC9/16T81.41114.28813.37112.76112.55513.37113.52013.48213.42113.434UNC5/8181.41115.87514.95814.34814.14314.95815.11015.07215.00915.022UNC3/4161.58819.05018.01917.33017.10218.01918.18418.14318.07018.082UNC7/8141.81422.22521.04620.26220.00021.04621.22421.18121.11021.123UNC1J22.11725.40024.0

15、2623.10922.80424.02624.21924.17124.08924.102G(BSP)非螺纹密封的管螺纹基本牙型与尺寸25.4口每25.4mm内牙数H=0.96049PH1=0.640327Pr=0.137329PH/6=0.160082螺纹代号每25.4mm内牙数螺距Pmm嫖纹大径d=Dmm螺纹中径d2=D2mm螺纹小径dl=DlmmHlmmRmm螺纹中径公差常丝惶螺纹中径公差帚minmaxminmaxG1/8280.9079.7289.1478.5660.5810.1259.1479.2549.1779.194G1/4191.33713.14712.30111.4450.85

16、60.18412.30112.42612.36612.356G3/8191.33716.66215.80614.9500.8560.18415.80615.93315.80115.861G1/2141.81420.95519.79318.6311.1620.24919.79319.93519.82819.848G5/8141.81422.91121.74920.5871.1620.24921.74921.89121.78421.804G3/4141.81426.44125.27924.1171.1620.24925.27925.42125.31425.334G7/8141.81432.2012

17、9.03927.8771.1620.24929.03929.18129.07429.094G111230933.24931.77030.2911.4790.31731.77031.95031.81531.839G1-1/8112.30937.89736.41834.9391.4790.31736.41836.59836.46336.487G1-1/4112.30941.91040.43138.9521.4790.31740.43140.61140.47640.500G1-3/8112.30944.32342.84441.3651.4790.31742.84443.02442.88942.913

18、G1-1/2”112.30947.80346.32444.8451.4790.31746.32446.50446.37446.398G1-3/4”112.30953.74652.26750.7881.4790.31752.26752.44752.32752.354G211230959.61458.13556.6561.4790.31758.13558.31558.19558.222丝锥图标与符号说明Mivir 入币J细才日13除级UNC -统一粗牙螺纹UNF- -统一细牙螺纹G (BSP)非璟纹密封的管螺纹螺孔型式T1通孔Y 1.2dT2通孔Y 2dB1不通孔1.2dB2不通孔- 1.8dB3不通孔 2.2dd为螺纹大径w(BSW)惠氏螺纹NPT_00牙形角圆锥管螺纹RP通一用螺纹密封的圆柱管螺纹RC(BSPT)用螺纹密封的圆柱管螺纹EC通一安装钢丝螺套用内螺纹螺纹齿形角：丝锥类别：6055N加工普通结构钢、软的灰铸铁中等硬度的有色金属加工特别硬的、硬而韧的材料W加工特别软与韧的材料丝锥结构种类：P3-直槽丝锥螺尖丝锥螺旋槽丝锥跳牙丝锥A型带冷却孔丝锥（用于不通孔）B型带冷却孔丝锥（用于通孔）挤压丝锥带油槽挤压丝锥钻攻复台丝锥丝锥采用的标准：中国国家标淮中国机械行业标准JB国际标准ISO德国标准带级别的螺纹丝锥材料：HS