管螺纹与普通螺纹攻牙孔径对照表
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1/161/81/43/81/25/83/47/86.808.8011.8015.2519.0021.0024.5028.256.758.7511.8015.3019.0021.0024.5528.30坯径
7.709.7013.1016.6020.9022.9026.4030.2011-1/81-1/41-1/21-3/422-1/42-1/230.7535.5039.5045.0051.0057.0063.0073.0030.8035.4539.4545.3551.3057.1563.2572.70坯径
33.2037.8041.9047.8053.7059.6065.7075.102-3/433-1/244-1/255-1/2679.0085.0098.0079.0085.4097.85110.50123.20135.90148.60161.30坯径
81.50
87.80
100.30
113.00
125.70
138.40
151.10
163.80
底孔锥孔大径1/16 6.60 6.55 6.40 6.20 6.5615.007.807.4512.509.001/88.608.558.408.208.5715.009.809.4512.509.001/411.5011.4511.2011.0011.4522.0013.5013.0018.5011.003/815.0014.9514.7514.5014.9522.0016.8016.2519.0012.001/218.7518.6518.2518.0018.6330.0021.1020.4025.0015.003/424.2524.1523.7523.5024.1231.0026.5025.8026.5017.00130.5030.3529.7529.5030.2938.0033.4032.5531.8019.001-1/439.0039.0038.3038.0038.9540.0042.1041.1034.2022.001-1/245.0044.9044.2044.0044.8540.0048.0047.0034.2023.00257.0056.7055.8055.5056.6645.0059.8058.6038.5026.002-1/273.0072.3071.2070.9072.2350.0075.4074.0543.0030.00385.0085.00
83.7083.5084.9353.0088.1086.5546.0032.003-1/297.4596.1095.8097.3755.00100.6098.9047.8035.004110.15108.60108.30110.1059.00113.30111.4052.0038.005135.50133.80133.50135.5063.00138.80136.6056.5042.006
160.90159.20
158.80160.9063.00164.20162.0056.50
42.00
底孔锥孔大径1/16 6.25 6.00 6.3915.008.007.6213.009.001/88.508.408.7415.0010.309.9513.009.001/411.1010.8011.3623.0013.8013.2519.0012.003/814.7014.2514.8023.0017.2016.6520.0012.001/218.0017.6018.3230.0021.4020.7025.0015.003/423.2523.0023.6730.0026.7026.0026.0015.00129.2528.7529.6937.0033.4032.5032.0019.001-1/438.0037.5038.4538.0042.2041.3032.0019.001-1/244.2543.5044.5238.0048.3047.3033.0020.00256.2555.5056.5639.0060.4059.4034.0020.002-1/267.0066.1067.6257.0073.1071.6050.0030.00383.0081.9083.5359.0089.0087.3051.0034.003-1/295.5094.5096.2460.00101.70100.0052.0034.004108.00107.10108.9061.00114.40112.5054.0037.005135.00133.90135.9064.00141.40139.4056.0038.006162.00160.50162.7067.00168.40166.2059.0042.008213.00210.90213.4072.00219.20216.7064.0046.0010267.00264.40267.2077.00273.10270.3070.0051.0012
317.00314.80318.00
82.00
324.00
320.8075.00
58.00
56.0067.0083.0096.00109.00
螺塞长圆锥外螺纹（NPT）锥孔坯
圆锥内螺纹（NPT）
圆锥小
端直径端肩距
圆柱内螺纹(NPSC)螺孔坯底直径柱孔坯底径底孔深圆锥大端(圆23.5029.5038.0044.00外螺纹（G）尺寸代号
内螺纹（G）钻（扩）孔底径车（镗）孔底径外螺纹（G）尺寸代号8.6011.2014.5018.00管螺纹参数表
55°非密封管螺纹（GB/T7307-2001）
尺寸代号
内螺纹（G）钻（扩）孔底径车（镗）孔底径外螺纹（G）尺寸代号
内螺纹（G）钻（扩）孔底径车（镗）孔底径圆锥小
端直径
端肩距螺塞长60°密封管螺纹（GB/T12716-2011）
圆柱内螺纹（R p）
圆锥内螺纹（R c）
圆锥外螺纹（R）
钻（扩）车（镗）柱孔坯底径锥孔坯
底孔深
圆锥大端直径55°密封管螺纹（GB/T7306.1~2-2000）
尺寸代号