螺纹螺距及底孔查询表
各种标准螺纹螺距底孔
60%100%60%100%60%100%60%100%60%100% M1 ×0.250.750.840.73M1 ×0.20.800.870.78W1/16-60 1.20 1.26 1.05Nr.1-64 1.50 1.60 1.42Nr.0-80 1.30 1.32 1.18 M1.1 ×0.250.850.940.83M1.1 ×0.20.900.970.88W3/32-48 1.80 1.97 1.70Nr.2-56 1.80 1.89 1.69Nr.1-72 1.60 1.62 1.47 M1.2 ×0.250.95 1.040.93M1.2 ×0.2 1.00 1.070.98W1/8-40 2.60 2.69 2.36Nr.3-48 2.10 2.17 1.94Nr.2-64 1.90 1.93 1.75 M1.4×0.3 1.10 1.21 1.08M1.4 ×0.2 1.20 1.27 1.18W5/32-32 3.10 3.36 2.95Nr.4-40 2.30 2.43 2.16Nr.3-56 2.10 2.22 2.02 M1.6 ×0.35 1.25 1.37 1.22M1.6 ×0.2 1.40 1.47 1.38W3/16-24 3.60 3.95 3.41Nr.5-40 2.60 2.76 2.49Nr.4-48 2.40 2.50 2.27 M1.7 ×0.35 1.35 1.47 1.32M1.8 ×0.2 1.60 1.67 1.58W7/32-24 4.50 4.74 4.20Nr.6-32 2.75 2.99 2.65Nr.5-44 2.70 2.80 2.55 M1.8 ×0.35 1.45 1.57 1.42M2 ×0.25 1.75 1.84 1.73W1/4-20 5.10 5.37 4.72Nr.8-32 3.50 3.65 3.31Nr.6-40 3.00 3.09 2.82 M2 ×0.4 1.60 1.74 1.57M2.2 ×0.25 1.95 2.07 1.93W5/16-18 6.50 6.85 6.13Nr.10-24 3.80 4.14 3.68Nr.8-36 3.50 3.71 3.40 M2.2 ×0.45 1.75 1.91 1.71M2.5 ×0.35 2.15 2.27 2.12W3/8-167.908.317.49Nr.12-24 4.50 4.80 4.34Nr.10-32 4.10 4.31 3.97 M2.3 ×0.4 1.90 2.04 1.87M3 ×0.35 2.65 2.77 2.62W7/16-149.309.728.791/4-20 5.10 5.53 4.98Nr.12-28 4.70 4.90 4.50 M2.5 ×0.45 2.05 2.21 2.01M3.5 ×0.35 3.15 3.27 3.12W1/2-1210.5011.079.995/16-18 6.507.02 6.411/4-28 5.50 5.76 5.37 M2.6 ×0.45 2.15 2.31 2.11M4 ×0.5 3.50 3.68 3.46W9/16-1212.0012.6611.583/8-167.908.497.815/16-24 6.907.25 6.79 M3 ×0.5 2.50 2.68 2.46M4.5 ×0.5 4.00 4.18 3.96W5/8-1113.5014.1012.927/16-149.309.939.153/8-248.508.848.38 M3 ×0.6 2.40 2.61 2.35M5 ×0.5 4.50 4.68 4.46W3/4-1016.5017.1015.801/2-1310.8011.4310.587/16-209.9010.299.74 M3.5 ×0.6 2.90 3.11 2.85M5.5 ×0.5 5.00 5.18 4.96W7/8-919.2520.0618.619/16-1212.2012.9112.001/2-2011.5011.8811.33 M4 ×0.7 3.30 3.55 3.24M6 ×0.5 5.50 5.68 5.46W1-822.0022.9621.335/8-1113.5014.3813.389/16-1812.9013.3712.76 M4 ×0.75 3.25 3.51 3.19M6 ×0.75 5.25 5.51 5.19W11/8-724.7525.7923.933/4-1016.5017.4016.305/8-1814.5014.9614.35 M4.5 ×0.75 3.75 4.01 3.69M7 ×0.75 6.25 6.51 6.19W11/4-727.7528.9627.107/8-919.5020.3919.173/4-1617.5018.0217.33 M5 ×0.8 4.20 4.48 4.13M8 ×0.757.257.517.19W13/8-630.2031.6729.501-822.2523.3421.967/8-1420.2521.0520.26 M5 ×0.9 4.10 4.70 4.66M8 ×1.07.007.35 6.92W11/2-633.5034.8532.6811/4-728.0029.3927.821-1223.2524.0323.11 M6 ×1.0 5.00 5.35 4.92M9 ×1.08.008.357.92W15/8-535.5037.3734.7713/8-631.0032.1830.3411/8-1226.5027.2026.28 M7 ×1.0 6.00 6.35 5.92M10 ×0.759.259.519.19W13/4-538.5040.5537.9411/2-634.5035.3533.5211/4-1229.5030.3829.46 M8 ×1.25 6.807.19 6.65M10 ×1.09.009.358.92W17/8-4.541.5043.2940.4013/4-539.0041.1538.9513/8-1232.5033.3532.63 M9 ×1.257.808.197.65M10 ×1.258.759.198.65W2-4.544.5046.4643.572-4.545.0047.1344.6911/2-1236.0036.7335.81 M10 ×1.58.509.038.38M11 ×1.010.0010.359.92M11 ×1.59.5010.039.38M12 ×0.7511.2511.5111.19M12 ×1.7510.2010.8610.11M12 ×1.011.0011.3510.92M14 ×2.012.0012.7011.83M12 ×1.2510.7511.1910.65M16 ×2.014.0014.7013.83M12 ×1.510.5011.0310.38M18 ×2.515.5016.3815.29M14 ×1.013.0013.3512.9260%100%60%100%60%100% M20 ×2.517.5018.3817.29M14 ×1.2512.7513.1912.65W1/16-60 1.40 1.42 1.32Nr.1-64 1.70 1.73 1.64Nr.0-80 1.40 1.42 1.35 M22 ×2.519.5020.3819.29M14 ×1.512.5013.0312.38W3/32-48 2.10 2.18 2.04Nr.2-56 2.00 2.04 1.94Nr.1-72 1.70 1.74 1.66 M24 ×3.021.0022.0520.75M15 ×1.014.0014.3513.92W1/8-40 2.85 2.93 2.77Nr.3-48 2.25 2.34 2.23Nr.2-64 2.00 2.06 1.97 M27 ×3.024.0025.0523.75M15 ×1.2513.7514.1913.65W5/32-32 3.55 3.66 3.46Nr.4-40 2.55 2.64 2.50Nr.3-56 2.30 2.37 2.27 M30 ×3.526.5027.7326.21M15 ×1.513.5014.0313.38W3/16-24 4.25 4.36 4.08Nr.5-40 2.90 2.97 2.83Nr.4-48 2.60 2.67 2.56 M33 ×3.529.5030.7329.21M16 ×1.015.0015.3514.92W7/32-24 5.05 5.15 4.88Nr.6-32 3.15 3.25 3.08Nr.5-44 2.90 2.99 2.86 M36 ×4.032.0033.4031.67M16 ×1.2514.7515.1914.65W1/4-20 5.75 5.86 5.54Nr.8-32 3.80 3.91 3.74Nr.6-40 3.20 3.30 3.16 M39 ×4.035.0036.4034.67M16 ×1.514.5015.0314.38W5/16-187.307.407.03Nr.10-24 4.35 4.48 4.25Nr.8-36 3.85 3.94 3.78 M42 ×4.537.5039.0837.13M18 ×1.017.0017.3516.92W3/8-168.808.928.51Nr.12-24 5.00 5.14 4.91Nr.10-32 4.45 4.57 4.40 M45 ×4.540.5042.0840.13M18 ×1.2516.7517.1916.65W7/16-1410.3010.429.951/4-20 5.75 5.94 5.66Nr.12-28 5.05 5.19 4.99 M48 ×5.043.0044.7542.59M18 ×1.516.5017.0316.38W1/2-1211.7511.8911.345/16-187.307.487.171/4-28 5.95 6.06 5.86 M52 ×5.047.0048.7546×59M18 ×2.016.0016.7015.833/8-168.809.018.675/16-247.407.597.36 M56 ×5.550.5052.4350.05M20 ×1.019.0019.3518.927/16-1410.3010.5210.133/8-249.009.188.95 M60 ×5.554.5056.4354.05M20 ×1.2518.7519.1918.651/2-1311.8012.0711.641/2-2012.1012.2912.01 M64 ×658.0060.1057.50M20 ×1.518.5019.0318.38M68 ×662.0064.1061.50M20 ×2.018.0018.7017.83PT(Rc)PS(Pp)PF(G)M72 ×666.0068.1065.50M22 ×1.021.0021.3520.92下孔径下孔径下孔径M76 ×670.0072.1069.50M22 ×1.2520.7521.1920.651/16-28 6.30 6.50 6.70英时英时//公 对照表无屑丝攻美制细牙螺纹无屑丝攻美制细牙螺纹((UNFUNF))规格规格规格规格公制粗牙螺纹公制粗牙螺纹((M)下孔径(%)下孔径规格公制细牙螺纹公制细牙螺纹((M)下孔径下孔径(%)无屑丝攻英制粗牙螺纹无屑丝攻英制粗牙螺纹((W)规格规格英制管牙螺纹无屑丝攻美制粗牙螺纹无屑丝攻美制粗牙螺纹((UNCUNC))针车牙螺纹针车牙螺纹((SMSM))英制粗牙螺纹英制粗牙螺纹((W)下孔径下孔径(%)规格美制细牙螺纹美制细牙螺纹((UNFUNF))下孔径下孔径(%)规格螺丝攻下孔径对照表下孔径下孔径(%)下孔径下孔径(%)下孔径下孔径(%)美制粗牙螺纹美制粗牙螺纹((UNCUNC))下孔径下孔径(%)M22 ×1.520.5021.0320.381/8-288.308.608.70M22 ×2.020.0020.0719.831/4-1911.0011.5011.7060%100%M24 ×1.023.0023.3522.923/8-1914.5015.0015.25SM1/16-80 1.30 1.34 1.181/16M24 ×1.2522.7523.1922.651/2-1418.1018.5019.00SM5/64-64 1.60 1.68 1.473/32M24 ×1.522.5023.0322.385/8-1421.00SM3/32-100 2.15 2.18 2.051/860%100%M24 ×2.022.0022.7021.833/4-1423.5024.0024.50SM3/32-56 1.90 2.03 1.795/32M1×0.250.900.920.86M25 ×1.024.0024.1923.927/8-1428.00SM1/8-44 2.55 2.73 2.4311/64M1.1×0.25 1.00 1.020.96M25 ×1.523.5024.0323.381-1129.6030.2530.50SM1/8-40 2.50 2.68 2.353/16M1.2×0.25 1.10 1.12 1.06M25 ×2.023.0023.7022.8311/8-1135.50SM9/64-40 2.90 3.08 2.757.32M1.4×0.3 1.25 1.30 1.24M26 ×1.524.5025.0324.3811/4-1138.1039.0039.50SM11/64-40 3.70 3.87 3.5415/64M1.6×0.35 1.45 1.49 1.41M27 ×1.026.0026.3525.9211/2-1144.0044.9045.00SM3/16-32 3.95 4.14 3.731/4M1.7×0.35 1.55 1.59 1.51M27 ×1.525.5026.0325.3813/4-1151.00SM3/16-28 3.80 4.06 3.589/32M1.8×0.35 1.65 1.69 1.61M27 ×2.025.0025.7024.832-1155.6056.6057.00SM7/32-32 4.70 4.94 4.535/16M2×0.4 1.80 1.87 1.78M28 ×1.526.5027.0326.38SM15/64-28 5.00 5.25 4.773/8M2.2×0.45 2.00 2.05 1.96M28 ×2026.0026.7025.83SM1/4-40 5.70 5.86 5.537/16M2.3×0.4 2.10 2.17 2.08M30 ×1.029.0029.3528.92SM1/4-28 5.40 5.64 5.171/2M2.5×0.45 2.30 2.35 2.26M30 ×1.528.5029.0328.38SM1/4-24 5.25 5.53 4.989/16M2.6×0.45 2.40 2.45 2.36M30 ×2.028.0028.7027.83NPT SM9/32-28 6.20 6.44 5.975/8M3×0.5 2.75 2.84 2.73M32 ×1.530.5031.0330.38下孔径SM9/32-20 5.80 6.15 5.4911/16M3.5×0.6 3.20 3.31 3.18M33 ×1.531.5032.0331.381/16-27 6.20SM5/16-287.007.23 6.673/4M4×0.7 3.65 3.77 3.62M33 ×2.031.0031.7030.831/8-278.50SM5/16-24 6.857.11 6.567/8M4.5×0.75 4.15 4.26 4.09M33 ×3.030.0031.5029.751/4-1811.00SM5/16-18 6.50 6.84 6.101M5×0.8 4.60 4.74 4.57M35 ×1.533.5034.0333.383/8-1814.50SM3/8-288.558.828.3511/8M6×1.0 5.50 5.68 5.46M36 ×1.534.5035.0334.381/2-1418.00SM3/8-188.058.437.6911/4M7×1.0 6.50 6.68 6.46M36 ×2.034.0034.7033.833/4-1423.00SM7/16-2810.1510.419.9313/8M8×1.257.357.597.32M36 ×3.033.0034.0532.751-111/２29.00SM7/16-169.409.889.0511/2M9×1.258.408.598.32M38 ×1.536.5037.0336.3811/4-111/２38.00SM1/2-2811.7511.9911.5215/8M10×1.59.259.519.19M39 ×1.537.5038.0337.3811/2-111/２44.00SM1/2-2011.3511.7111.0513/4M12×1.7511.1011.4311.05M39 ×2.037.0037.7036.832-111/３56.00SM1/2-1210.4011.059.9517/8M39 ×3.036.0037.0535.7521/265.892M40 ×1.538.5039.0338.38M40 ×2.038.0038.7037.83M40 ×3.037.0038.0536.75M42 ×1.540.5041.0340.3860%100%M42 ×2.040.0040.7039.83Pg7 -2011.4011.6911.08M42 ×3.039.0040.0538.75Pg9 -1814.0014.3313.66M42 ×4.038.0040.7037.66Pg11 -1817.2517.7317.06M45 ×1.543.5044.0343.38Pg13.5 -1819.0019.5318.86M45 ×2.043.0043.7042.83Pg16 -1821.2521.6320.96M45 ×3.042.0043.0541.75Pg21 -1626×7527.2426.48M45 ×4.041.0042.4040.67Pg29 -1635.5035.9435.18M48 ×2.046.0046.7045.83Pg36 -1645.5045.9445.18M48 ×3.045.0046.0544.75Pg42 -1652.5052.9452.08M48 ×4.044.0045.4043.67Pg48 -1657.5058.2457.48M50 ×1.548.5049.0348.38M50 ×2.048.0048.7047.83M50 ×3.047.0048.0546.75M52 ×1.550.5051.0350.38M52 ×2.050.0050.7049.83M52 ×3.049.0050.0548.7567.4622.225025.400028.575050.800047.625041.275044.450038.100034.925031.750014.287515.875017.462519.0500美制管牙螺纹无屑丝攻公制粗牙螺纹无屑丝攻公制粗牙螺纹((M )Pg Pg钢管牙钢管牙规格规格规格下孔径下孔径(%)56.4044.45下孔径下孔径(%)规格下孔径下孔径(%)12.70004.36563.96883.17501.587538.1029.4023.4018.1514.7011.158.756.35下孔径NPS 11.112512.70009.52507.93757.14386.35005.95315.55635厘7厘半1分1分2厘半--1分半1分7厘半2.3813--2分2分2厘半2分半3分3分半4分4分半5分5分半6分7分1吋1吋1分1吋2分1吋3分2吋1吋4分1吋5分1吋6分1吋7分。
压铆螺母、螺钉底孔一览表
φ6.4
7.6
M5×0.8
PF31/PF32
1.0/1.5
φ8.0
7.6
M6×1.0
PF31/PF32
1.5
φ9.5
8.9
6、圆形胀铆螺母7、六角形胀铆螺母
规格
代码
最小板厚
底孔径
规格
代码
最小板厚
底孔径
M3×0.5
1.2/1.5/2
1.2/1.5/2
φ5.0
M3×0.5
1.5/2
1.5/2
6～25
1.0
φ4.8
/
M5×0.8
8～35
1.0
φ5.0（φ6.8非标）
/
M6×1.0
10～35
1.5
φ6.0（φ6.8非标）
/
4、自扣紧螺栓（圆头压铆螺钉）FH
规格
L（螺纹长度）
适合板厚min
底孔孔径+0.08
孔心板边距min
M3×0.5
6～25
1.0
φ3.0
5.6
M4×0.7
6～35
1.0
φ4.0
7.2
M5×0.8
8～35
1.0
φ5.0
7.2
M6×1.0
10～35
1.6
φ6.0
7.9
M8×1.25
10～35
2.4
φ8.0
9.6
5、PF31/PF32装配压铆式面板螺钉
规格
代码
最小板厚
底孔孔径+0.08
G（螺纹长度）
M3×0.5
PF31/PF32
1.0/1.5
φ6.0
7.6
螺纹螺距及底孔查询表[新版]
![螺纹螺距及底孔查询表[新版]](https://img.taocdn.com/s3/m/adaae649f11dc281e53a580216fc700abb6852da.png)
60%100%60%100%60%100%60%100%60%100% M1 ×0.250.750.840.73M1 ×0.20.800.870.78W1/16-60 1.20 1.26 1.05Nr.1-64 1.50 1.60 1.42Nr.0-80 1.30 1.32 1.18 M1.1 ×0.250.850.940.83M1.1 ×0.20.900.970.88W3/32-48 1.80 1.97 1.70Nr.2-56 1.80 1.89 1.69Nr.1-72 1.60 1.62 1.47 M1.2 ×0.250.95 1.040.93M1.2 ×0.2 1.00 1.070.98W1/8-40 2.60 2.69 2.36Nr.3-48 2.10 2.17 1.94Nr.2-64 1.90 1.93 1.75 M1.4×0.3 1.10 1.21 1.08M1.4 ×0.2 1.20 1.27 1.18W5/32-32 3.10 3.36 2.95Nr.4-40 2.30 2.43 2.16Nr.3-56 2.10 2.22 2.02 M1.6 ×0.35 1.25 1.37 1.22M1.6 ×0.2 1.40 1.47 1.38W3/16-24 3.60 3.95 3.41Nr.5-40 2.60 2.76 2.49Nr.4-48 2.40 2.50 2.27 M1.7 ×0.35 1.35 1.47 1.32M1.8 ×0.2 1.60 1.67 1.58W7/32-24 4.50 4.74 4.20Nr.6-32 2.75 2.99 2.65Nr.5-44 2.70 2.80 2.55 M1.8 ×0.35 1.45 1.57 1.42M2 ×0.25 1.75 1.84 1.73W1/4-20 5.10 5.37 4.72Nr.8-32 3.50 3.65 3.31Nr.6-40 3.00 3.09 2.82 M2 ×0.4 1.60 1.74 1.57M2.2 ×0.25 1.95 2.07 1.93W5/16-18 6.50 6.85 6.13Nr.10-24 3.80 4.14 3.68Nr.8-36 3.50 3.71 3.40 M2.2 ×0.45 1.75 1.91 1.71M2.5 ×0.35 2.15 2.27 2.12W3/8-167.908.317.49Nr.12-24 4.50 4.80 4.34Nr.10-32 4.10 4.31 3.97 M2.3 ×0.4 1.90 2.04 1.87M3 ×0.35 2.65 2.77 2.62W7/16-149.309.728.791/4-20 5.10 5.53 4.98Nr.12-28 4.70 4.90 4.50 M2.5 ×0.45 2.05 2.21 2.01M3.5 ×0.35 3.15 3.27 3.12W1/2-1210.5011.079.995/16-18 6.507.02 6.411/4-28 5.50 5.76 5.37 M2.6 ×0.45 2.15 2.31 2.11M4 ×0.5 3.50 3.68 3.46W9/16-1212.0012.6611.583/8-167.908.497.815/16-24 6.907.25 6.79 M3 ×0.5 2.50 2.68 2.46M4.5 ×0.5 4.00 4.18 3.96W5/8-1113.5014.1012.927/16-149.309.939.153/8-248.508.848.38 M3 ×0.6 2.40 2.61 2.35M5 ×0.5 4.50 4.68 4.46W3/4-1016.5017.1015.801/2-1310.8011.4310.587/16-209.9010.299.74 M3.5 ×0.6 2.90 3.11 2.85M5.5 ×0.5 5.00 5.18 4.96W7/8-919.2520.0618.619/16-1212.2012.9112.001/2-2011.5011.8811.33 M4 ×0.7 3.30 3.55 3.24M6 ×0.5 5.50 5.68 5.46W1-822.0022.9621.335/8-1113.5014.3813.389/16-1812.9013.3712.76 M4 ×0.75 3.25 3.51 3.19M6 ×0.75 5.25 5.51 5.19W11/8-724.7525.7923.933/4-1016.5017.4016.305/8-1814.5014.9614.35 M4.5 ×0.75 3.75 4.01 3.69M7 ×0.75 6.25 6.51 6.19W11/4-727.7528.9627.107/8-919.5020.3919.173/4-1617.5018.0217.33 M5 ×0.8 4.20 4.48 4.13M8 ×0.757.257.517.19W13/8-630.2031.6729.501-822.2523.3421.967/8-1420.2521.0520.26 M5 ×0.9 4.10 4.70 4.66M8 ×1.07.007.35 6.92W11/2-633.5034.8532.6811/4-728.0029.3927.821-1223.2524.0323.11 M6 ×1.0 5.00 5.35 4.92M9 ×1.08.008.357.92W15/8-535.5037.3734.7713/8-631.0032.1830.3411/8-1226.5027.2026.28 M7 ×1.0 6.00 6.35 5.92M10 ×0.759.259.519.19W13/4-538.5040.5537.9411/2-634.5035.3533.5211/4-1229.5030.3829.46 M8 ×1.25 6.807.19 6.65M10 ×1.09.009.358.92W17/8-4.541.5043.2940.4013/4-539.0041.1538.9513/8-1232.5033.3532.63 M9 ×1.257.808.197.65M10 ×1.258.759.198.65W2-4.544.5046.4643.572-4.545.0047.1344.6911/2-1236.0036.7335.81 M10 ×1.58.509.038.38M11 ×1.010.0010.359.92M11 ×1.59.5010.039.38M12 ×0.7511.2511.5111.19M12 ×1.7510.2010.8610.11M12 ×1.011.0011.3510.92M14 ×2.012.0012.7011.83M12 ×1.2510.7511.1910.65M16 ×2.014.0014.7013.83M12 ×1.510.5011.0310.38M18 ×2.515.5016.3815.29M14 ×1.013.0013.3512.9260%100%60%100%60%100% M20 ×2.517.5018.3817.29M14 ×1.2512.7513.1912.65W1/16-60 1.40 1.42 1.32Nr.1-64 1.70 1.73 1.64Nr.0-80 1.40 1.42 1.35 M22 ×2.519.5020.3819.29M14 ×1.512.5013.0312.38W3/32-48 2.10 2.18 2.04Nr.2-56 2.00 2.04 1.94Nr.1-72 1.70 1.74 1.66 M24 ×3.021.0022.0520.75M15 ×1.014.0014.3513.92W1/8-40 2.85 2.93 2.77Nr.3-48 2.25 2.34 2.23Nr.2-64 2.00 2.06 1.97 M27 ×3.024.0025.0523.75M15 ×1.2513.7514.1913.65W5/32-32 3.55 3.66 3.46Nr.4-40 2.55 2.64 2.50Nr.3-56 2.30 2.37 2.27 M30 ×3.526.5027.7326.21M15 ×1.513.5014.0313.38W3/16-24 4.25 4.36 4.08Nr.5-40 2.90 2.97 2.83Nr.4-48 2.60 2.67 2.56 M33 ×3.529.5030.7329.21M16 ×1.015.0015.3514.92W7/32-24 5.05 5.15 4.88Nr.6-32 3.15 3.25 3.08Nr.5-44 2.90 2.99 2.86 M36 ×4.032.0033.4031.67M16 ×1.2514.7515.1914.65W1/4-20 5.75 5.86 5.54Nr.8-32 3.80 3.91 3.74Nr.6-40 3.20 3.30 3.16 M39 ×4.035.0036.4034.67M16 ×1.514.5015.0314.38W5/16-187.307.407.03Nr.10-24 4.35 4.48 4.25Nr.8-36 3.85 3.94 3.78 M42 ×4.537.5039.0837.13M18 ×1.017.0017.3516.92W3/8-168.808.928.51Nr.12-24 5.00 5.14 4.91Nr.10-32 4.45 4.57 4.40 M45 ×4.540.5042.0840.13M18 ×1.2516.7517.1916.65W7/16-1410.3010.429.951/4-20 5.75 5.94 5.66Nr.12-28 5.05 5.19 4.99 M48 ×5.043.0044.7542.59M18 ×1.516.5017.0316.38W1/2-1211.7511.8911.345/16-187.307.487.171/4-28 5.95 6.06 5.86 M52 ×5.047.0048.7546×59M18 ×2.016.0016.7015.833/8-168.809.018.675/16-247.407.597.36 M56 ×5.550.5052.4350.05M20 ×1.019.0019.3518.927/16-1410.3010.5210.133/8-249.009.188.95 M60 ×5.554.5056.4354.05M20 ×1.2518.7519.1918.651/2-1311.8012.0711.641/2-2012.1012.2912.01 M64 ×658.0060.1057.50M20 ×1.518.5019.0318.38M68 ×662.0064.1061.50M20 ×2.018.0018.7017.83PT(Rc)PS(Pp)PF(G)M72 ×666.0068.1065.50M22 ×1.021.0021.3520.92下孔径下孔径下孔径M76 ×670.0072.1069.50M22 ×1.2520.7521.1920.651/16-28 6.30 6.50 6.70英时英时//公 对照表无屑丝攻美制细牙螺纹无屑丝攻美制细牙螺纹((UNFUNF))规格规格规格规格公制粗牙螺纹公制粗牙螺纹((M)下孔径(%)下孔径规格公制细牙螺纹公制细牙螺纹((M)下孔径下孔径(%)无屑丝攻英制粗牙螺纹无屑丝攻英制粗牙螺纹((W)规格规格英制管牙螺纹无屑丝攻美制粗牙螺纹无屑丝攻美制粗牙螺纹((UNCUNC))针车牙螺纹针车牙螺纹((SMSM))英制粗牙螺纹英制粗牙螺纹((W)下孔径下孔径(%)规格美制细牙螺纹美制细牙螺纹((UNFUNF))下孔径下孔径(%)规格螺丝攻下孔径对照表下孔径下孔径(%)下孔径下孔径(%)下孔径下孔径(%)美制粗牙螺纹美制粗牙螺纹((UNCUNC))下孔径下孔径(%)M22 ×1.520.5021.0320.381/8-288.308.608.70M22 ×2.020.0020.0719.831/4-1911.0011.5011.7060%100%M24 ×1.023.0023.3522.923/8-1914.5015.0015.25SM1/16-80 1.30 1.34 1.181/16M24 ×1.2522.7523.1922.651/2-1418.1018.5019.00SM5/64-64 1.60 1.68 1.473/32M24 ×1.522.5023.0322.385/8-1421.00SM3/32-100 2.15 2.18 2.051/860%100%M24 ×2.022.0022.7021.833/4-1423.5024.0024.50SM3/32-56 1.90 2.03 1.795/32M1×0.250.900.920.86M25 ×1.024.0024.1923.927/8-1428.00SM1/8-44 2.55 2.73 2.4311/64M1.1×0.25 1.00 1.020.96M25 ×1.523.5024.0323.381-1129.6030.2530.50SM1/8-40 2.50 2.68 2.353/16M1.2×0.25 1.10 1.12 1.06M25 ×2.023.0023.7022.8311/8-1135.50SM9/64-40 2.90 3.08 2.757.32M1.4×0.3 1.25 1.30 1.24M26 ×1.524.5025.0324.3811/4-1138.1039.0039.50SM11/64-40 3.70 3.87 3.5415/64M1.6×0.35 1.45 1.49 1.41M27 ×1.026.0026.3525.9211/2-1144.0044.9045.00SM3/16-32 3.95 4.14 3.731/4M1.7×0.35 1.55 1.59 1.51M27 ×1.525.5026.0325.3813/4-1151.00SM3/16-28 3.80 4.06 3.589/32M1.8×0.35 1.65 1.69 1.61M27 ×2.025.0025.7024.832-1155.6056.6057.00SM7/32-32 4.70 4.94 4.535/16M2×0.4 1.80 1.87 1.78M28 ×1.526.5027.0326.38SM15/64-28 5.00 5.25 4.773/8M2.2×0.45 2.00 2.05 1.96M28 ×2026.0026.7025.83SM1/4-40 5.70 5.86 5.537/16M2.3×0.4 2.10 2.17 2.08M30 ×1.029.0029.3528.92SM1/4-28 5.40 5.64 5.171/2M2.5×0.45 2.30 2.35 2.26M30 ×1.528.5029.0328.38SM1/4-24 5.25 5.53 4.989/16M2.6×0.45 2.40 2.45 2.36M30 ×2.028.0028.7027.83NPT SM9/32-28 6.20 6.44 5.975/8M3×0.5 2.75 2.84 2.73M32 ×1.530.5031.0330.38下孔径SM9/32-20 5.80 6.15 5.4911/16M3.5×0.6 3.20 3.31 3.18M33 ×1.531.5032.0331.381/16-27 6.20SM5/16-287.007.23 6.673/4M4×0.7 3.65 3.77 3.62M33 ×2.031.0031.7030.831/8-278.50SM5/16-24 6.857.11 6.567/8M4.5×0.75 4.15 4.26 4.09M33 ×3.030.0031.5029.751/4-1811.00SM5/16-18 6.50 6.84 6.101M5×0.8 4.60 4.74 4.57M35 ×1.533.5034.0333.383/8-1814.50SM3/8-288.558.828.3511/8M6×1.0 5.50 5.68 5.46M36 ×1.534.5035.0334.381/2-1418.00SM3/8-188.058.437.6911/4M7×1.0 6.50 6.68 6.46M36 ×2.034.0034.7033.833/4-1423.00SM7/16-2810.1510.419.9313/8M8×1.257.357.597.32M36 ×3.033.0034.0532.751-111/２29.00SM7/16-169.409.889.0511/2M9×1.258.408.598.32M38 ×1.536.5037.0336.3811/4-111/２38.00SM1/2-2811.7511.9911.5215/8M10×1.59.259.519.19M39 ×1.537.5038.0337.3811/2-111/２44.00SM1/2-2011.3511.7111.0513/4M12×1.7511.1011.4311.05M39 ×2.037.0037.7036.832-111/３56.00SM1/2-1210.4011.059.9517/8M39 ×3.036.0037.0535.7521/265.892M40 ×1.538.5039.0338.38M40 ×2.038.0038.7037.83M40 ×3.037.0038.0536.75M42 ×1.540.5041.0340.3860%100%M42 ×2.040.0040.7039.83Pg7 -2011.4011.6911.08M42 ×3.039.0040.0538.75Pg9 -1814.0014.3313.66M42 ×4.038.0040.7037.66Pg11 -1817.2517.7317.06M45 ×1.543.5044.0343.38Pg13.5 -1819.0019.5318.86M45 ×2.043.0043.7042.83Pg16 -1821.2521.6320.96M45 ×3.042.0043.0541.75Pg21 -1626×7527.2426.48M45 ×4.041.0042.4040.67Pg29 -1635.5035.9435.18M48 ×2.046.0046.7045.83Pg36 -1645.5045.9445.18M48 ×3.045.0046.0544.75Pg42 -1652.5052.9452.08M48 ×4.044.0045.4043.67Pg48 -1657.5058.2457.48M50 ×1.548.5049.0348.38M50 ×2.048.0048.7047.83M50 ×3.047.0048.0546.75M52 ×1.550.5051.0350.38M52 ×2.050.0050.7049.83M52 ×3.049.0050.0548.7567.4622.225025.400028.575050.800047.625041.275044.450038.100034.925031.750014.287515.875017.462519.0500美制管牙螺纹无屑丝攻公制粗牙螺纹无屑丝攻公制粗牙螺纹((M )Pg Pg钢管牙钢管牙规格规格规格下孔径下孔径(%)56.4044.45下孔径下孔径(%)规格下孔径下孔径(%)12.70004.36563.96883.17501.587538.1029.4023.4018.1514.7011.158.756.35下孔径NPS 11.112512.70009.52507.93757.14386.35005.95315.55635厘7厘半1分1分2厘半--1分半1分7厘半2.3813--2分2分2厘半2分半3分3分半4分4分半5分5分半6分7分1吋1吋1分1吋2分1吋3分2吋1吋4分1吋5分1吋6分1吋7分。
丝锥螺距规格表【免费下载】
1, 国家标准普通螺纹螺距表螺纹规格牙距螺纹底孔直径M2 标准0.40 1.60细牙0.25 1.75M2.5 标准0.45 2.10细牙0.35 2.20M2.6 标准0.45 2.20细牙0.35 2.25M3 标准0.50 2.60 细牙0.35 2.70M3.5 标准0.60 3.00 细牙0.35 3.20M4 标准0.70 3.40 细牙0.50 3.60M5 标准0.80 4.20 细牙0.50 4.60M6 标准1.00 5.10 细牙0.75 5.30M8 标准1.25 6.80 细牙1 1.00 7.10细牙2 0.75 7.30M10 标准1.50 8.60 细牙1 1.25 8.90细牙2 1.00 9.10细牙3 0.75 9.30M12 标准1.75 10.40 细牙1 1.50 10.60细牙2 1.25 10.90细牙3 1.00 11.10M14 标准2.00 12.20细牙1 1.50 12.60细牙2 1.00 13.10M16 标准2.00 14.20细牙1 1.50 14.60细牙2 1.00 15.10M18 标准2.50 15.70细牙1 2.00 16.20细牙2 1.50 16.60细牙3 1.00 17.102, 各种螺纹的标准螺距及相关常用螺距M8标准螺纹螺距是1.25mm（粗牙）或1mm（细牙）。
螺距：在螺旋方向上测量的两个相邻螺纹之间的距离。
一般是指螺纹间距中直径线上两相邻齿之间两点间的轴向距离。
标准螺纹有公制和英制之分，因此同是M10的螺纹它的螺距也不相同。
航模、直升机航模中的螺距：指的是直升机的旋翼或固定翼的螺旋桨旋转一周360度，向上或向前行走的距离。
螺旋CT的问世产生了一个新的概念，螺距（pitch,P）。
对早期的单层螺旋，各厂家对此定义是统一的，即螺距=球管旋转360度的进床距离/准直宽度。
对于多层螺旋CT螺距的概念有点复杂，多层CT的一个准直宽度包含了多个相邻的图像。
螺纹底孔直径速查表
螺纹底孔直径一、螺纹底孔直径计算式螺纹底孔直径可参照表1、表2的公式计算，也可查表3至表11。
表1 加工米制普通螺纹底孔钻头直径D的计算公式适用范围1D = d – t式中 d：螺纹的公称直径t：螺距（1）螺距t<1；（2）工件材料塑性较大；（3）孔扩张量适中。
2 D = d – (1.04～1.08)t （1）螺距t<1；（2）工件材料塑性较小；（3）孔扩张量较小。
表2 加工英制螺纹底孔钻头直径的计算公式(mm)螺纹公称直径(英寸)铸铁与青铜 钢与黄铜3/16"～5/8" D = 25.4·(d - 1/n) D = 25.4·(d - 1/n) + 0.1 3/4"～1 1/2" D = 25.4·(d - 1/n) D = 25.4·(d - 1/n) + 0.2注：n—每英寸牙数·2·二、螺纹底孔直径表表3 米制粗牙螺纹攻丝前用的钻头直径(mm)螺 纹小 直 径 级 别公称直径 螺距5Hmax 6Hmax7Hmax5H、6H、7Hmin钻头直径1 1.2 1.6 2 2.5 34568 10 12 14 16 18 20 22 24 0.250.250.350.40.450.50.70.811.251.51.75222.52.52.530.7850.9851.3011.6572.1122.5713.3824.2945.0076.8598.61210.37112.13514.13515.64917.64919.64921.1521.3211.6792.1382.5993.4224.3345.1536.9128.67610.44112.21014.21015.74417.74419.74421.2522.6393.4664.3845.2176.9828.75110.53112.31014.31015.85417.85419.85421.3820.7290.9291.2211.5612.0132.4593.2424.1344.9176.6478.37610.10611.83513.83515.29417.29419.29420.7540.750.951.251.602.052.503.304.205.006.808.5010.212.014.015.517.519.521.0·3·表4 米制细牙螺纹攻丝前用的钻头直径(mm)螺 纹小 直 径 级 别公称直径 螺距 5Hmax 6Hmax7Hmax5H、6H、7Hmin钻头直径2.5 3 0.352.2012.7012.2212.7212.1212.6212.152.654 5 0.53.5714.5713.5994.5993.6394.6393.4594.4593.504.5068 10 0.755.3387.3389.3385.3787.3789.3785.4247.4249.4245.1887.1889.1885.707.209.208 10 12 1416 18 20 22 24 17.1079.10711.10713.10715.10717.10719.10721.10723.1077.2179.21711.21713.21715.21717.21719.21721.21723.2177.2179.21711.21713.21715.21717.21719.21721.21723.2176.9178.91710.91712.91714.91716.91718.91720.91722.9177.009.0011.013.015.017.019.021.023.01012 14 1.258.85910.85912.8598.91210.91212.9128.98210.98212.9828.64710.64712.6478.8010.812.812141516 18 20 22 1.510.61212.61213.61214.61216.61218.61220.61210.67612.67613.67614.67616.67618.67620.67610.75112.75113.75114.75116.75118.75120.75110.37612.37613.37614.37616.37618.37620.37610.512.513.514.516.518.520.5·4·螺 纹小 直 径 级 别公称直径 螺距 5Hmax 6Hmax7Hmax5H、6H、7Hmin钻头直径2425 1.522.61223.61222.67623.67622.75123.75122.37623.37622.523.518 20222425 216.13518.13520.13522.13523.13516.21018.21020.21022.21023.21016.31018.31020.31022.31023.31015.83517.83519.83521.83522.83516.018.020.022.023.0表5 英国标准粗牙惠氏螺纹Ｂ、Ｓ、Ｗ攻丝前用的钻头直径(mm)钻 头 直 径公称直径 （英寸） 每英寸牙数铸铁、青铜、黄铜钢、可锻铸铁3/16 1/45/16 3/81/25/83/47/811 1/8 1 1/4 1 1/2 1 3/4 2 242018161211109877654 1/23.85.16.68.010.613.616.619.622.325.028.234.039.545.33.95.26.78.110.713.816.819.722.525.228.434.239.745.6·5·表6 英寸制统一粗牙螺纹UNC 攻丝前用的钻头直径(mm)螺 纹小 直 径 级 别公称直径 （英寸） 每英寸牙 数螺 距2B max 3B max 2B、3B min 钻头 直径 No.1 No.2 No.3 No.4 No.5 64 56 48 40 40 0.397 0.454 0.529 0.635 0.635 1.5821.8722.1462.3852.697 1.5821.8722.1462.3852.697 1.4251.6941.9412.1562.487 1.55 1.85 2.10 2.35 2.65 No.6 No.8 No.10 No.12 1/4 32 32 24 24 20 0.794 0.794 1.058 1.058 1.270 2.8963.5313.9624.5975.268 2.8963.5283.9504.5905.250 2.6423.3023.6834.3434.976 2.85 3.50 3.90 4.60 5.10 5/16 3/8 7/16 1/2 9/16 18 16 14 13 12 1.411 1.588 1.814 1.954 2.117 6.7848.1649.55011.01312.456 6.6808.0829.44110.88112.301 6.4117.8059.14910.58411.996 6.60 8.00 9.40 10.80 12.20 5/8 3/4 7/8 1 1 1/8 11 10 9 8 7 2.309 2.540 2.822 3.175 3.629 13.86816.83319.74822.59825.34913.69316.62419.52022.34425.08213.37616.29919.16921.96324.64813.50 16.50 19.50 22.25 25.00 1 1/4 1 3/8 1 1/2 1 3/4 2 7 6 6 5 4 1/23.6294.233 4.2335.080 5.64428.52431.12034.29539.81445.59828.25830.85134.02639.56045.36727.82330.34333.51938.95144.68928.00 30.75 34.00 39.50 45.00·6· 表7 英寸制统一细牙螺纹UNF 攻丝前用的钻头直径(mm)螺 纹小 直 径 级 别公称直径 （英寸） 每英寸牙 数螺 距2B max 3B max 2B、3B min 钻头 直径 No.0 No.1 No.2 No.3 No.4 80 72 64 56 48 0.318 0.353 0.397 0.454 0.529 1.3061.6131.9132.1972.459 1.3061.6131.9132.1972.459 1.1811.4731.7552.0242.271 1.25 1.55 1.90 2.15 2.40 No.5 No.6 No.8 No.10 No.12 44 40 36 32 28 0.577 0.635 0.706 0.794 0.907 2.7413.0233.6074.1664.724 2.7413.0123.5974.1684.717 2.5502.8193.4043.9624.496 2.70 2.95 3.50 4.10 4.70 1/4 5/16 3/8 7/16 1/2 28 24 24 20 20 0.907 1.058 1.058 1.270 1.270 5.5807.0388.62610.03011.618 5.5636.9958.5659.94711.524 5.3676.7928.3799.73811.326 5.50 6.90 8.50 9.90 11.50 9/16 5/8 3/4 7/8 1 18 18 16 14 12 1.411 1.411 1.588 1.814 2.117 13.08414.67117.68920.66323.56912.96914.55417.54620.49323.36312.76114.34817.33020.26223.10912.90 14.50 17.50 20.40 23.25 1 1/8 1 1/4 1 3/8 1 1/2 12 12 12 122.117 2.117 2.117 2.11726.74429.91933.09436.26926.53829.71332.88836.06326.28429.45932.63435.80926.50 29.50 32.75 36.00·7·表8 GB7307-87、ISO228/1-1982非螺纹密封的管螺纹攻丝前用的钻头直径(mm)螺 纹小 直 径 公称直径 （英寸） 每英寸 牙 数 螺 距 max min 钻头 直径 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 1 1/4 1 1/2 1 3/4 2 28 19 19 14 14 14 14 11 11 11 11 110.907 1.337 1.337 1.814 1.814 1.814 1.814 2.309 2.309 2.309 2.309 2.3098.848 11.890 16.395 19.172 21.128 24.658 28.418 30.931 39.592 45.485 51.428 75.2968.566 11.445 14.950 18.631 20.587 24.117 27.877 30.291 38.952 44.845 50.788 56.5568.80 11.80 15.25 19.00 21.00 24.50 28.25 30.75 39.50 45.00 51.00 57.00·8· 表9 GB7306-87、ISO7/1-1982用螺纹密封的管螺纹攻丝前用的钻头直径(mm)螺 纹小 直 径 公称直径 （英寸） 每英寸 牙 数 螺 距 max min 钻头 直径 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 28 19 19 14 14 11 11 11 110.907 1.337 1.337 1.814 1.814 2.309 2.309 2.309 2.3098.637 11.549 15.054 18.773 24.259 30.471 39.132 45.025 56.8368.495 11.341 14.846 18.489 23.975 30.111 38.772 44.665 56.4768.60 11.50 15.00 18.50 24.00 30.25 39.00 45.00 56.50·9·表10 美标(NPT、NPSC)管螺纹底孔推荐的麻花钻直径(英寸)锥 螺 纹公称直径使用铰刀 不用铰刀直管螺纹1 2 3 41/161/81/43/81/23/411 1/4 1 1/2 22 1/2 21/6427/649/1611/1657/641 1/21 15/321 23/322 3/162 19/32*0.240*0.328*0.422*0.562*0.688*0.891*1.1251.4691.7192.1882.5947/169/1645/6429/321 9/641 31/641 47/642 13/642 5/8*0.246*0.332*0.438*0.562*0.703*0.906*1.1411.4841.7342.2032.6251/411/327/1637/6423/3259/641 5/321 1/21 3/42 7/322 21/32*0.250*0.344*0.438*0.578*0.719*0.922*1.1561.5001.7502.2192.656注：*为美国标准麻花钻尺寸·10·表11 美标(NPTF、NPSI)干密封管螺纹底孔推荐的麻花钻直径(英寸)锥 螺 纹公称直径使用铰刀 不用铰刀直管螺纹1 2 3 41/161/81/43/81/23/411 1/4 1 1/2 22 1/23 21/6427/649/1611/1657/641 1/81 15/321 45/642 3/162 19/323 7/32*0.234*0.328*0.422*0.562*0.688*0.891*1.1251.4691.7032.1882.5943.2197/1627/6445/6459/641 5/321 1/21 47/642 7/322 41/643 17/64*0.246*0.339*0.436*0.578*0.703*0.922*1.1561.5001.7342.2192.6413.2661/4*11/3227/6423/32*59/641 5/32*0.250*0.344*0.444*0.578*0.719*0.922*1.156注：*为美国标准麻花钻尺寸。
螺纹底孔对应表
常用螺纹底孔对应表
一．常用米制普通粗牙螺纹的螺距如下表(螺纹底孔直径：碳钢φ＝公称直径－P；铸铁φ＝公称直径－1.05~1.1P；加工外螺纹光杆直径取φ＝公称直径－0.13P)：
表1 常用米制普通粗牙螺纹的直径/螺距
二．一般用途的锥管螺纹NPT
1. 标记：3/8-18NPT。
2. 基本中径和基准距离：锥管螺纹的基本中径是根据管子外径、螺距和手旋合长度确定的，内外螺纹之间用手旋合的公称长度为基准距离，内螺纹的基面为螺纹大端处截面（该截面上的螺纹中径为基本中径），外螺纹基面在离小端距离为基准距离处。
表2. 常用螺纹尺寸
三.UNC粗牙螺纹系列该系列通常在批量生产的螺栓、螺钉、螺母和其它一般工程上采用。
低搞拉强度的材料，如铸件、低碳钢和其它软材料上加工的内螺纹应采用粗牙螺纹，以使内螺纹获得最佳的脱扣强度。
UNC螺纹适用于要求快速拆或有可能产生腐蚀和轻微损伤的部位。
常用螺纹螺距底径对照表-资料类
常用螺纹螺距底径对照表－资料类关键信息项1、螺纹类型2、螺距规格3、底径尺寸11 协议目的本协议旨在提供常用螺纹螺距底径的准确对照信息，以便相关使用者在工程设计、制造及维修等领域能够准确获取和应用所需数据。
111 适用范围本协议适用于涉及螺纹加工、使用和检测的各类机械制造、建筑、汽车等行业。
112 协议的权威性本对照表基于相关国家标准和行业规范制定，具有较高的权威性和参考价值。
12 螺纹类型及规格121 常见螺纹类型包括但不限于普通螺纹（M）、梯形螺纹（Tr）、管螺纹（G）等。
122 普通螺纹（M）的规格涵盖从 M2 至 M64 等常见尺寸。
123 梯形螺纹（Tr）包括 Tr20×4 至 Tr80×12 等规格。
13 螺距规格131 普通螺纹（M）的螺距规格根据螺纹直径的不同而有所变化，如 M10 的螺距可为 15、125 等。
132 梯形螺纹（Tr）的螺距则相对固定，如 Tr40×7 的螺距为 7。
14 底径尺寸141 底径的计算方法因螺纹类型而异。
142 对于普通螺纹（M），底径＝螺纹直径螺距×10825。
143 梯形螺纹（Tr）的底径计算相对复杂，需根据具体规格和标准进行。
15 数据准确性151 本对照表中的数据经过严格的测量和计算，确保准确性。
152 然而，在实际应用中，由于加工误差、材料特性等因素，可能会存在一定的偏差。
16 数据更新161 随着相关标准的修订和技术的发展，本对照表将定期进行更新。
162 使用者应关注最新的版本，以获取最准确和最新的数据。
17 责任与免责声明171 提供者尽力确保数据的准确性和可靠性，但不对因使用本对照表而导致的任何直接或间接损失承担责任。
172 使用者在应用数据时应进行必要的核实和验证。
18 知识产权声明181 本对照表的编制和整理受到知识产权法律的保护。
182 未经授权，不得擅自复制、传播或用于商业目的。
19 协议的解释与修改191 本协议的解释权归提供者所有。
螺纹底孔直径尺寸表
螺纹底孔直径尺寸表M1:粗扣螺距0.25＝Φ0.75 细扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6 细扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5 细扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3 细扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2 细扣螺距0.5＝Φ4.5M6:粗扣螺距1＝Φ5 细扣螺距0.75＝Φ5.2M8:粗扣螺距1.25＝Φ6.7 细扣螺距1,0.75＝Φ7,Φ7.2M10:粗扣螺距1.5＝Φ8.5 细扣螺距1.25,1,0.75＝Φ8.7,Φ9,Φ9.2M12:粗扣螺距1.75＝Φ10.2 细扣螺距1.5,1.25,1＝Φ10.5,Φ10.7,Φ11M14:粗扣螺距2＝Φ11.9 细扣螺距1.5,1.25,1＝Φ12.5,Φ12.7,Φ13M16:粗扣螺距2＝Φ13.9 细扣螺距1.5,1＝Φ14.5,Φ15M18:粗扣螺距2.5＝Φ15.4 细扣螺距2,1.5,1＝Φ15.9,Φ16.5,Φ17M20:粗扣螺距2.5＝Φ17.4 细扣螺距2,1.5,1＝Φ17.9,Φ18.5,Φ19M22:粗扣螺距2.5＝Φ19.5 细扣螺距2,1.5,1＝Φ19.9,Φ20.5,Φ21M24:粗扣螺距3＝Φ20.9 细扣螺距2,1.5,1＝Φ21.9,Φ22.5,Φ23M27: 粗扣螺距3＝Φ23.9 细扣螺距2,1.5,1＝Φ24.9,Φ25.5,Φ26M30: 粗扣螺距3.5＝Φ26.3 细扣螺距3,2,1.5,1＝Φ26.9,Φ27.9,Φ28.5Φ29 M33: 粗扣螺距3.5＝Φ29.3 细扣螺距3,2,1.5,＝Φ29.9,Φ30.9,Φ31.5M36: 粗扣螺距4＝Φ31.8 细扣螺距3,2,1.5,＝Φ32.9,Φ33.9,Φ34.5M39: 粗扣螺距4＝Φ34.8 细扣螺距3,2,1.5,＝Φ35.9,Φ36.9,Φ37.5M42: 粗扣螺距4.5＝Φ37.3 细扣螺距4,3,2,1.5,＝Φ37.8,Φ38.9,Φ39.9,Φ40.5 M45: 粗扣螺距4.5＝Φ40.3 细扣螺距4,3,2,1.5,＝Φ40.8,Φ41.9,Φ42.9,Φ43.5 M48: 粗扣螺距5＝Φ42.7 细扣螺距4,3,2,1.5,＝Φ43.8,Φ44.9,Φ45.9,Φ46.5 M52: 粗扣螺距5＝Φ46.7 细扣螺距4,3,2,1.5,＝Φ47.8,Φ48.9,Φ49.9,Φ50.5螺纹底孔直径尺寸表.txt生产中钻螺纹底孔公式：t＜1mm: Dz=d-tt＞1mm: Dz=d-(1.04~1.06)t式中 t 螺距（毫米）Dz 攻丝前钻头直径（毫米）d 螺纹公称直径（毫米） 生产中钢料可按数值选取，软料钻头直径可选大些，但不可太大．。
螺纹螺距及底孔查询表
60%100%60%100%60%100%60%100%60%100% M1 ×0.250.750.840.73M1 ×0.20.800.870.78W1/16-60 1.20 1.26 1.05Nr.1-64 1.50 1.60 1.42Nr.0-80 1.30 1.32 1.18 M1.1 ×0.250.850.940.83M1.1 ×0.20.900.970.88W3/32-48 1.80 1.97 1.70Nr.2-56 1.80 1.89 1.69Nr.1-72 1.60 1.62 1.47 M1.2 ×0.250.95 1.040.93M1.2 ×0.2 1.00 1.070.98W1/8-40 2.60 2.69 2.36Nr.3-48 2.10 2.17 1.94Nr.2-64 1.90 1.93 1.75 M1.4×0.3 1.10 1.21 1.08M1.4 ×0.2 1.20 1.27 1.18W5/32-32 3.10 3.36 2.95Nr.4-40 2.30 2.43 2.16Nr.3-56 2.10 2.22 2.02 M1.6 ×0.35 1.25 1.37 1.22M1.6 ×0.2 1.40 1.47 1.38W3/16-24 3.60 3.95 3.41Nr.5-40 2.60 2.76 2.49Nr.4-48 2.40 2.50 2.27 M1.7 ×0.35 1.35 1.47 1.32M1.8 ×0.2 1.60 1.67 1.58W7/32-24 4.50 4.74 4.20Nr.6-32 2.75 2.99 2.65Nr.5-44 2.70 2.80 2.55 M1.8 ×0.35 1.45 1.57 1.42M2 ×0.25 1.75 1.84 1.73W1/4-20 5.10 5.37 4.72Nr.8-32 3.50 3.65 3.31Nr.6-40 3.00 3.09 2.82 M2 ×0.4 1.60 1.74 1.57M2.2 ×0.25 1.95 2.07 1.93W5/16-18 6.50 6.85 6.13Nr.10-24 3.80 4.14 3.68Nr.8-36 3.50 3.71 3.40 M2.2 ×0.45 1.75 1.91 1.71M2.5 ×0.35 2.15 2.27 2.12W3/8-167.908.317.49Nr.12-24 4.50 4.80 4.34Nr.10-32 4.10 4.31 3.97 M2.3 ×0.4 1.90 2.04 1.87M3 ×0.35 2.65 2.77 2.62W7/16-149.309.728.791/4-20 5.10 5.53 4.98Nr.12-28 4.70 4.90 4.50 M2.5 ×0.45 2.05 2.21 2.01M3.5 ×0.35 3.15 3.27 3.12W1/2-1210.5011.079.995/16-18 6.507.02 6.411/4-28 5.50 5.76 5.37 M2.6 ×0.45 2.15 2.31 2.11M4 ×0.5 3.50 3.68 3.46W9/16-1212.0012.6611.583/8-167.908.497.815/16-24 6.907.25 6.79 M3 ×0.5 2.50 2.68 2.46M4.5 ×0.5 4.00 4.18 3.96W5/8-1113.5014.1012.927/16-149.309.939.153/8-248.508.848.38 M3 ×0.6 2.40 2.61 2.35M5 ×0.5 4.50 4.68 4.46W3/4-1016.5017.1015.801/2-1310.8011.4310.587/16-209.9010.299.74 M3.5 ×0.6 2.90 3.11 2.85M5.5 ×0.5 5.00 5.18 4.96W7/8-919.2520.0618.619/16-1212.2012.9112.001/2-2011.5011.8811.33 M4 ×0.7 3.30 3.55 3.24M6 ×0.5 5.50 5.68 5.46W1-822.0022.9621.335/8-1113.5014.3813.389/16-1812.9013.3712.76 M4 ×0.75 3.25 3.51 3.19M6 ×0.75 5.25 5.51 5.19W11/8-724.7525.7923.933/4-1016.5017.4016.305/8-1814.5014.9614.35 M4.5 ×0.75 3.75 4.01 3.69M7 ×0.75 6.25 6.51 6.19W11/4-727.7528.9627.107/8-919.5020.3919.173/4-1617.5018.0217.33 M5 ×0.8 4.20 4.48 4.13M8 ×0.757.257.517.19W13/8-630.2031.6729.501-822.2523.3421.967/8-1420.2521.0520.26 M5 ×0.9 4.10 4.70 4.66M8 ×1.07.007.35 6.92W11/2-633.5034.8532.6811/4-728.0029.3927.821-1223.2524.0323.11 M6 ×1.0 5.00 5.35 4.92M9 ×1.08.008.357.92W15/8-535.5037.3734.7713/8-631.0032.1830.3411/8-1226.5027.2026.28 M7 ×1.0 6.00 6.35 5.92M10 ×0.759.259.519.19W13/4-538.5040.5537.9411/2-634.5035.3533.5211/4-1229.5030.3829.46 M8 ×1.25 6.807.19 6.65M10 ×1.09.009.358.92W17/8-4.541.5043.2940.4013/4-539.0041.1538.9513/8-1232.5033.3532.63 M9 ×1.257.808.197.65M10 ×1.258.759.198.65W2-4.544.5046.4643.572-4.545.0047.1344.6911/2-1236.0036.7335.81 M10 ×1.58.509.038.38M11 ×1.010.0010.359.92M11 ×1.59.5010.039.38M12 ×0.7511.2511.5111.19M12 ×1.7510.2010.8610.11M12 ×1.011.0011.3510.92M14 ×2.012.0012.7011.83M12 ×1.2510.7511.1910.65M16 ×2.014.0014.7013.83M12 ×1.510.5011.0310.38M18 ×2.515.5016.3815.29M14 ×1.013.0013.3512.9260%100%60%100%60%100% M20 ×2.517.5018.3817.29M14 ×1.2512.7513.1912.65W1/16-60 1.40 1.42 1.32Nr.1-64 1.70 1.73 1.64Nr.0-80 1.40 1.42 1.35 M22 ×2.519.5020.3819.29M14 ×1.512.5013.0312.38W3/32-48 2.10 2.18 2.04Nr.2-56 2.00 2.04 1.94Nr.1-72 1.70 1.74 1.66 M24 ×3.021.0022.0520.75M15 ×1.014.0014.3513.92W1/8-40 2.85 2.93 2.77Nr.3-48 2.25 2.34 2.23Nr.2-64 2.00 2.06 1.97 M27 ×3.024.0025.0523.75M15 ×1.2513.7514.1913.65W5/32-32 3.55 3.66 3.46Nr.4-40 2.55 2.64 2.50Nr.3-56 2.30 2.37 2.27 M30 ×3.526.5027.7326.21M15 ×1.513.5014.0313.38W3/16-24 4.25 4.36 4.08Nr.5-40 2.90 2.97 2.83Nr.4-48 2.60 2.67 2.56 M33 ×3.529.5030.7329.21M16 ×1.015.0015.3514.92W7/32-24 5.05 5.15 4.88Nr.6-32 3.15 3.25 3.08Nr.5-44 2.90 2.99 2.86 M36 ×4.032.0033.4031.67M16 ×1.2514.7515.1914.65W1/4-20 5.75 5.86 5.54Nr.8-32 3.80 3.91 3.74Nr.6-40 3.20 3.30 3.16 M39 ×4.035.0036.4034.67M16 ×1.514.5015.0314.38W5/16-187.307.407.03Nr.10-24 4.35 4.48 4.25Nr.8-36 3.85 3.94 3.78 M42 ×4.537.5039.0837.13M18 ×1.017.0017.3516.92W3/8-168.808.928.51Nr.12-24 5.00 5.14 4.91Nr.10-32 4.45 4.57 4.40 M45 ×4.540.5042.0840.13M18 ×1.2516.7517.1916.65W7/16-1410.3010.429.951/4-20 5.75 5.94 5.66Nr.12-28 5.05 5.19 4.99 M48 ×5.043.0044.7542.59M18 ×1.516.5017.0316.38W1/2-1211.7511.8911.345/16-187.307.487.171/4-28 5.95 6.06 5.86 M52 ×5.047.0048.7546×59M18 ×2.016.0016.7015.833/8-168.809.018.675/16-247.407.597.36 M56 ×5.550.5052.4350.05M20 ×1.019.0019.3518.927/16-1410.3010.5210.133/8-249.009.188.95 M60 ×5.554.5056.4354.05M20 ×1.2518.7519.1918.651/2-1311.8012.0711.641/2-2012.1012.2912.01 M64 ×658.0060.1057.50M20 ×1.518.5019.0318.38M68 ×662.0064.1061.50M20 ×2.018.0018.7017.83PT(Rc)PS(Pp)PF(G)M72 ×666.0068.1065.50M22 ×1.021.0021.3520.92下孔径下孔径下孔径M76 ×670.0072.1069.50M22 ×1.2520.7521.1920.651/16-28 6.30 6.50 6.70英时英时//公 对照表无屑丝攻美制细牙螺纹无屑丝攻美制细牙螺纹((UNFUNF))规格规格规格规格公制粗牙螺纹公制粗牙螺纹((M)下孔径(%)下孔径规格公制细牙螺纹公制细牙螺纹((M)下孔径下孔径(%)无屑丝攻英制粗牙螺纹无屑丝攻英制粗牙螺纹((W)规格规格英制管牙螺纹无屑丝攻美制粗牙螺纹无屑丝攻美制粗牙螺纹((UNCUNC))针车牙螺纹针车牙螺纹((SMSM))英制粗牙螺纹英制粗牙螺纹((W)下孔径下孔径(%)规格美制细牙螺纹美制细牙螺纹((UNFUNF))下孔径下孔径(%)规格螺丝攻下孔径对照表下孔径下孔径(%)下孔径下孔径(%)下孔径下孔径(%)美制粗牙螺纹美制粗牙螺纹((UNCUNC))下孔径下孔径(%)M22 ×1.520.5021.0320.381/8-288.308.608.70M22 ×2.020.0020.0719.831/4-1911.0011.5011.7060%100%M24 ×1.023.0023.3522.923/8-1914.5015.0015.25SM1/16-80 1.30 1.34 1.181/16M24 ×1.2522.7523.1922.651/2-1418.1018.5019.00SM5/64-64 1.60 1.68 1.473/32M24 ×1.522.5023.0322.385/8-1421.00SM3/32-100 2.15 2.18 2.051/860%100%M24 ×2.022.0022.7021.833/4-1423.5024.0024.50SM3/32-56 1.90 2.03 1.795/32M1×0.250.900.920.86M25 ×1.024.0024.1923.927/8-1428.00SM1/8-44 2.55 2.73 2.4311/64M1.1×0.25 1.00 1.020.96M25 ×1.523.5024.0323.381-1129.6030.2530.50SM1/8-40 2.50 2.68 2.353/16M1.2×0.25 1.10 1.12 1.06M25 ×2.023.0023.7022.8311/8-1135.50SM9/64-40 2.90 3.08 2.757.32M1.4×0.3 1.25 1.30 1.24M26 ×1.524.5025.0324.3811/4-1138.1039.0039.50SM11/64-40 3.70 3.87 3.5415/64M1.6×0.35 1.45 1.49 1.41M27 ×1.026.0026.3525.9211/2-1144.0044.9045.00SM3/16-32 3.95 4.14 3.731/4M1.7×0.35 1.55 1.59 1.51M27 ×1.525.5026.0325.3813/4-1151.00SM3/16-28 3.80 4.06 3.589/32M1.8×0.35 1.65 1.69 1.61M27 ×2.025.0025.7024.832-1155.6056.6057.00SM7/32-32 4.70 4.94 4.535/16M2×0.4 1.80 1.87 1.78M28 ×1.526.5027.0326.38SM15/64-28 5.00 5.25 4.773/8M2.2×0.45 2.00 2.05 1.96M28 ×2026.0026.7025.83SM1/4-40 5.70 5.86 5.537/16M2.3×0.4 2.10 2.17 2.08M30 ×1.029.0029.3528.92SM1/4-28 5.40 5.64 5.171/2M2.5×0.45 2.30 2.35 2.26M30 ×1.528.5029.0328.38SM1/4-24 5.25 5.53 4.989/16M2.6×0.45 2.40 2.45 2.36M30 ×2.028.0028.7027.83NPT SM9/32-28 6.20 6.44 5.975/8M3×0.5 2.75 2.84 2.73M32 ×1.530.5031.0330.38下孔径SM9/32-20 5.80 6.15 5.4911/16M3.5×0.6 3.20 3.31 3.18M33 ×1.531.5032.0331.381/16-27 6.20SM5/16-287.007.23 6.673/4M4×0.7 3.65 3.77 3.62M33 ×2.031.0031.7030.831/8-278.50SM5/16-24 6.857.11 6.567/8M4.5×0.75 4.15 4.26 4.09M33 ×3.030.0031.5029.751/4-1811.00SM5/16-18 6.50 6.84 6.101M5×0.8 4.60 4.74 4.57M35 ×1.533.5034.0333.383/8-1814.50SM3/8-288.558.828.3511/8M6×1.0 5.50 5.68 5.46M36 ×1.534.5035.0334.381/2-1418.00SM3/8-188.058.437.6911/4M7×1.0 6.50 6.68 6.46M36 ×2.034.0034.7033.833/4-1423.00SM7/16-2810.1510.419.9313/8M8×1.257.357.597.32M36 ×3.033.0034.0532.751-111/２29.00SM7/16-169.409.889.0511/2M9×1.258.408.598.32M38 ×1.536.5037.0336.3811/4-111/２38.00SM1/2-2811.7511.9911.5215/8M10×1.59.259.519.19M39 ×1.537.5038.0337.3811/2-111/２44.00SM1/2-2011.3511.7111.0513/4M12×1.7511.1011.4311.05M39 ×2.037.0037.7036.832-111/３56.00SM1/2-1210.4011.059.9517/8M39 ×3.036.0037.0535.7521/265.892M40 ×1.538.5039.0338.38M40 ×2.038.0038.7037.83M40 ×3.037.0038.0536.75M42 ×1.540.5041.0340.3860%100%M42 ×2.040.0040.7039.83Pg7 -2011.4011.6911.08M42 ×3.039.0040.0538.75Pg9 -1814.0014.3313.66M42 ×4.038.0040.7037.66Pg11 -1817.2517.7317.06M45 ×1.543.5044.0343.38Pg13.5 -1819.0019.5318.86M45 ×2.043.0043.7042.83Pg16 -1821.2521.6320.96M45 ×3.042.0043.0541.75Pg21 -1626×7527.2426.48M45 ×4.041.0042.4040.67Pg29 -1635.5035.9435.18M48 ×2.046.0046.7045.83Pg36 -1645.5045.9445.18M48 ×3.045.0046.0544.75Pg42 -1652.5052.9452.08M48 ×4.044.0045.4043.67Pg48 -1657.5058.2457.48M50 ×1.548.5049.0348.38M50 ×2.048.0048.7047.83M50 ×3.047.0048.0546.75M52 ×1.550.5051.0350.38M52 ×2.050.0050.7049.83M52 ×3.049.0050.0548.7567.4622.225025.400028.575050.800047.625041.275044.450038.100034.925031.750014.287515.875017.462519.0500美制管牙螺纹无屑丝攻公制粗牙螺纹无屑丝攻公制粗牙螺纹((M )Pg Pg钢管牙钢管牙规格规格规格下孔径下孔径(%)56.4044.45下孔径下孔径(%)规格下孔径下孔径(%)12.70004.36563.96883.17501.587538.1029.4023.4018.1514.7011.158.756.35下孔径NPS 11.112512.70009.52507.93757.14386.35005.95315.55635厘7厘半1分1分2厘半--1分半1分7厘半2.3813--2分2分2厘半2分半3分3分半4分4分半5分5分半6分7分1吋1吋1分1吋2分1吋3分2吋1吋4分1吋5分1吋6分1吋7分。