标准螺纹下孔孔径表
各种螺纹详细参数和钻孔直径对照表
19/64
15/32
11/4
115/32
131/64
11/2
11/2
11/16
123/32
13/4
2
211/64
23/16
27/32
21/2
239/64
239/64
221/32
上述钻头直径來源於美制管用螺纹ANSI／ASME —1983 Pipe Threads, General Purpose (Inch)標準
7
~ (100~80)
14×2
6
~ (100~90)
10
~ (100~85)
14×
5
~ (100~90)
9
~ (100~85)
16×2
6
~ (100~90)
10
~ (100~85)
16×
5
~ (100~90)
9
~ (100~80)
18×
6
~ (100~90)
11
~ (100~85)
18×
6
~ (100~90)
45 × 4
41
(90%)
45 × 3
42
(85%)
45 × 2
43
(85%)
45 ×
(85%)
48 × 4
44
(90%)
48 × 3
45
(85%)
48 × 2
46
(85%)
48 ×
(85%)
50 × 3
47
(85%)
50 × 2
48
(85%)
50 ×
(85%)
註(1)等級：6H
(2)基於JIS B 0211-1982標準
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。
螺纹下孔径表(无屑丝攻用)
2
1.78 ~ 1.82(100~80)
4
1.81 ~ 1.85 (100~75)
2.3×0.4
2
2.08 ~ 2.12(100~80)
4
2.11 ~ 2.15 (100~75)
2.5×0.45
2
2.25 ~ 2.29(100~80)
4
2.28 ~ 2.33 (100~75)
2.6×0.45
7/16 -14
7
10.11 ~10.25 (100~80)
5
10.08 ~10.19 (100~85)
1/2 -13
8
10.62 ~11.78 (100~80)
6
11.60 ~11.68 (100~90)
9/16 -12
10
13.14 ~13.27 (100~85)
8
13.11 ~13.24 (100~85)
6
3.65 ~ 3.70 (100~85)
5×0.8
4
4.57 ~ 4.62(100~85)
6
4.59 ~ 4.66 (100~80)
6×1
4
5.45 ~ 5.51(100~85)
7
5.48 ~ 5.57 (100~80)
7×1
4
6.45 ~ 6.51(100~85)
7
6.48 ~ 6.57 (100~80)
16.57 ~16.67 (100~90)
11
16.63 ~16.78 (100~85)
18×1.5
6
17.17 ~17.23 (100~90)
10
17.22 ~17.31 (100~85)
20×2.5
各种螺纹详细参数和钻孔直径对照表
螺纹下孔径表公制粗牙螺纹 JIS B 0209-1982(單位：mm)註(1)以下等級：5H、以上等級：6H(2)基於JIS B 0209-1982標準螺纹下孔径表螺纹下孔径表註(1)等級：6H(2)基於JIS B 0211-1982標準螺纹下孔径表美制粗牙螺纹 (單位：mm)螺纹下孔径表美制細牙螺纹 (單位：mm)螺纹下孔径表英制粗牙螺纹(單位：mm)螺纹下孔径表英制管用螺纹 (單位：mm)螺纹下孔径表美制斜行管用螺纹 (NPT‧NPS) (單位：mm)上述钻头直径來源於美制管用螺纹ANSI／ASME —1983 Pipe Threads, General Purpose (Inch)標準。
螺纹下孔径表美制管用耐密斜行螺纹(NPTF‧NPSF) (單位：mm)上述钻头直径來源於美制管用耐密斜行螺纹ANSI —1957 Dryseal Pipe Threads (Inch)標準。
螺纹下孔径表(無屑絲攻用)公制螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)美制粗牙螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)美制細牙螺纹(NRT) (單位：mm)英制管用平行螺纹(NRT) (單位：mm)螺纹下孔径表(無屑絲攻用)公制螺纹(HRT) (單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 HL-NRT (單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 (單位：mm)公制細牙螺纹 (單位：mm)螺纹下孔径表(護套螺纹用)美制粗牙螺纹 (單位：mm)各 種 換 算 表山數節距換算表管用螺絲基準寸法(mm)。
螺纹孔径对照表
英制粗牙(W)
規格 W1/16 -60 W3/32 -48 W1/8 -40 W5/32 -32 W3/16 -24 W7/32 -24 W1/4 -20 W5/16 -18 W3/8 -16 W7/16 -14 W1/2 -12 W9/16 -12 W5/8 -11 W3/4 -10 W7/8 -9 W1 -8 W1 1/8 -7 W1 1/4 -7 W1 3/8 -6 W1 1/2 -6 W1 5/8 -5 W1 3/4 -5 W1 7/8 -4.5 W2 -4.5 規 W1/16 W3/32 W1/8 W5/32 W3/16 W7/32 W1/4 W5/16 W3/8 W7/16 W1/2 格 -60 -48 -40 -32 -24 -24 -20 -18 -16 -14 -12 下孔徑 1.20 1.80 2.60 3.10 3.60 4.50 5.10 6.50 7.90 9.30 10.50 12.00 13.50 16.50 19.25 22.00 24.75 27.75 30.20 33.50 35.50 38.50 41.50 44.50 下孔徑 1.40 2.10 2.85 3.55 4.25 5.05 5.75 7.30 8.80 10.30 11.75 下孔徑(%) 60% 100% 1.26 1.05 1.97 1.70 2.69 2.36 3.36 2.95 3.95 3.41 4.74 4.20 5.37 4.72 6.85 6.13 8.31 7.49 9.72 8.79 11.07 9.99 12.66 11.58 14.10 12.92 17.10 15.80 20.06 18.61 22.96 21.33 25.79 23.93 28.96 27.10 31.67 29.50 34.85 32.68 37.37 34.77 40.55 37.94 43.29 40.40 46.46 43.57 下孔徑(%) 60% 100% 1.42 1.32 2.18 2.04 2.93 2.77 3.66 3.46 4.36 4.08 5.15 4.88 5.86 5.54 7.40 7.03 8.92 8.51 10.42 9.95 11.89 11.34 規格 Nr.1 -64 Nr.2 -56 Nr.3 -48 Nr.4 -40 Nr.5 -40 Nr.6 -32 Nr.8 -32 Nr.10 -24 Nr.12 -24 1/4 -20 5/16 -18 3/8 -16 7/16 -14 1/2 -13 9/16 -12 5/8 -11 3/4 -10 7/8 -9 1 -8 1 1/4 -7 1 3/8 -6 1 1/2 -6 1 3/4 -5 2 - 4.5 規 格
最全面的螺纹加工底孔径对照表
最全面的螺纹加工底孔径对照表本文件包含内容公制粗螺纹2级牙底孔径对照表公制细螺纹2级牙底孔径对照表美制粗螺纹2级牙底孔径对照表美制细螺纹2级牙底孔径对照表公制迫牙丝攻钻孔径对照表美制迫牙丝攻钻孔径对照表美制特细螺纹2级牙底孔径对照表英制电器螺纹底孔径对照表英制管螺纹(PS）底孔径对照表英制管螺纹(PT）底孔径对照表美制管螺纹(NPT、NPS）底孔径对照表英制螺纹(UNEF）底孔径对照表公制螺纹（滚造径）底孔径对照表针车用其所长螺纹（滚造径）底孔径对照表英制圆柱管螺纹(55度）加工一览表英制锥管螺纹(55度）加工一览表布锥管螺纹加工一览表美制UNC、UNF螺纹参数表惠氏BSW、BSF螺纹参数表公制螺纹特殊材质工件加工底孔径对照表非密封管螺纹底孔径对照表英制锥管螺纹和英制锥螺纹攻丝前钻底孔的钻头直径日标英制锥度管螺纹底孔径对照表英制平行管螺纹底孔径对照表美制管用螺纹（使用/不使用铰刀）底孔径对照表圆锥管螺纹（新旧国标、日标）底孔径对照表圆柱管螺纹（新旧国标、日标）底孔径对照表布锥管螺纹（新旧国标、日标）底孔径对照表公制粗牙（铜、铁、不锈钢、铝质工件）底孔径对照表公制细牙（铜、铁、不锈钢、铝质工件）底孔径对照表60度圆锥管螺纹（钻/镗孔）底孔径对照表60度圆柱管螺纹（钻/镗孔）底孔径对照表公制细螺纹美制细螺纹全球最大中文电子商务平台阿里巴巴6年诚信通会员单位江都市华宇刃具厂竭诚为您服务，企业官网链接：。
G 英制圆柱管螺纹（55°）加工一览表小径：d1=d-1.2807tZG 英制锥管螺纹（55°）加工一览表小径：d1=d-1.2807t注意：底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时孔深度尺寸。
（规定为15倍螺距）Z 圆锥管螺纹（布锥管螺纹）（60°）小径：d1=d-1.6t美制螺纹（UNC、UNF）参数表（60°）小径：1注意：in为英寸符号，一英寸等于25.4毫米。
最全的螺纹孔径对照表
最全的螺纹孔径对照表在机械加工和制造领域，螺纹孔径的准确测量和选择是至关重要的。
螺纹孔的尺寸规格繁多，为了方便工程技术人员在设计、加工和装配过程中能够快速准确地找到所需的螺纹孔径数据，我们整理了这份最全的螺纹孔径对照表。
首先，让我们来了解一下什么是螺纹孔径。
螺纹孔径指的是在螺纹孔中，除去螺纹部分的内孔直径。
它是决定螺纹连接强度、密封性以及装配精度的重要参数。
常见的螺纹标准有公制螺纹和英制螺纹。
公制螺纹以毫米为单位，英制螺纹则以英寸为单位。
以下是公制螺纹孔径的对照表：M1 螺纹的孔径约为 075mm，M2 螺纹的孔径约为 16mm，M3 螺纹的孔径约为 25mm，M4 螺纹的孔径约为 33mm，M5 螺纹的孔径约为42mm，M6 螺纹的孔径约为 5mm，M8 螺纹的孔径约为 68mm，M10螺纹的孔径约为 85mm，M12 螺纹的孔径约为 102mm，M14 螺纹的孔径约为 12mm，M16 螺纹的孔径约为 14mm，M18 螺纹的孔径约为155mm，M20 螺纹的孔径约为175mm，M22 螺纹的孔径约为195mm，M24 螺纹的孔径约为 21mm，M27 螺纹的孔径约为 24mm，M30 螺纹的孔径约为 265mm，M33 螺纹的孔径约为 295mm，M36 螺纹的孔径约为 32mm，M39 螺纹的孔径约为 35mm，M42 螺纹的孔径约为375mm，M45 螺纹的孔径约为 405mm，M48 螺纹的孔径约为 43mm，M52 螺纹的孔径约为 475mm，M56 螺纹的孔径约为 505mm，M60 螺纹的孔径约为 545mm，M64 螺纹的孔径约为 585mm，M68 螺纹的孔径约为 62mm，M72 螺纹的孔径约为 66mm，M76 螺纹的孔径约为70mm，M80 螺纹的孔径约为 74mm，M85 螺纹的孔径约为 79mm，M90 螺纹的孔径约为 84mm，M95 螺纹的孔径约为 89mm，M100 螺纹的孔径约为 94mm。
最全螺纹底孔查询表
NPT
不用铰刀时
37.69
NPS
38.1
螺纹(PS,PF,PT)
钻孔径
最大
最小
57.296 56.656
针车用螺纹
规格
标准径
最大
最小
SM1/16 -80 1.25 1.281 1.211
美制特殊螺纹(UNS)
规格（2B内螺纹) 螺纹外径
钻孔径
最大
最小
1/4-36 UNS 2B 6.35 5.7404 5.588
规格
标准径
2级牙钻孔径 最大 最小
1/4 -32 5.6 5.689 5.487
牙 套 螺 纹攻 用
规格
钻头径参考表
公制粗螺纹公制细螺纹
螺纹下孔钻头径参考表
之材质、硬度、形状、尺寸等之影响，多少会有所变动，因此于
参考上表之同时，变请增减若干
美制粗螺纹英制螺纹
注：本表建议的钻头径，以市面上出售的标准钻头选择之使用钻头钻孔用，由于使用时加工条件及被削材质配合度而影响孔的尺寸和精密度，有很大差别，请检查孔径是否在规格内，不适当时依实际情况，请适当变更钻头径。
注:单位:M/M表示
螺纹咬合率计算公式
牙纹公制外径=
2.5钻咀外径= 2.35 标准牙山高度：公制牙.英美联合牙:0.541266P
牙距(公制牙)=0.45
惠氏牙(旧英制牙) :0.5565P P=牙距饱牙率(公制牙)=30.79200738
管牙 :0.6403P
底径=牙型外径-0.2*牙距-0.00403*牙距*饱牙率+0.0127*RH精度
牙纹公制外径
2.5
牙孔底径 2.4牙距0.45
RH精度7
饱牙率54.5354
螺纹下孔钻头径参考表
钻头径。
螺纹下孔径对照表
6.782 8.382 9.729 11.329 12.751 14.351 17.323 20.27 23.114 26.289 29.464 32.639 35.814
注:迫牙丝攻之钻孔径,在上表所列之数值,由于 被加工材料之材质,硬度,形状,尺寸等之影响, 多少会有所变动,因此于参考上表之同时,亦精 增减若干。
英 制 管 螺 纹 美 制 粗 螺 纹 规格(UNC) No 1-64(1.854) No 2-56(2.184) No 3-48(2.515) No 4-40(2.845) No 5-40(3.175) No 6-32(3.505) 标准径 1.55 1.8 2.1 2.3 2.6 2.8 2级牙钻孔径 最大 最小 1.582 1.871 2.146 2.385 2.697 2.895 1.425 1.695 1.941 2.157 2.487 2.642 规格 PS 1/16 - 28 PS 1/8 - 28 PS 1/4 - 19 PS 3/8 - 19 PS 1/2 - 14 PS 3/4 - 14 PS 1 - 11 标准径 钻孔径 最大 最小 6.5 6.632 6.49 8.5 11.4 15 18.5 24 30.2 8.637 11.549 15.054 18.773 24.259 30.471 8.495 11.341 14.846 18.489 23.975 30.111
5/16 - 24 3/8 - 24 7/16 - 20 1/2 - 20 9/16 - 18 5/8 - 18 3/4 - 16 7/8 - 14 1 - 12 1-1/8 - 12 1-1/4 - 12 1-3/8 - 12 1-1/2 - 12
螺纹规格对照表
螺纹规格对照表螺纹底孔径公制粗牙螺纹 JIS B 0209-1982(单位:mm)(注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 1 × 0.25 0.75 0.78 (80%) 0.729 0.785 1.1 × 0.25 0.85 0.88 (80%) 0.829 0.885 1.2 × 0.25 0.95 0.98 (80%) 0.929 0.985 1.4 × 0.3 1.1 1.14 (80%) 1.075 1.142 1.6 × 0.35 1.25 1.32 (75%) 1.221 1.321 1.8 × 0.351.45 1.52 (75%) 1.421 1.521 2 × 0.4 1.6 1.65 (80%) 1.567 1.6792.2 × 0.45 1.75 1.83 (75%) 1.713 1.838 2.5 × 0.45 2.1 2.13 (75%) 2.013 2.1383 × 0.5 2.5 2.59 (75%) 2.459 2.599 3.5 × 0.6 2.9 3.01 (75%) 2.8503.010 4 × 0.7 3.3 3.39 (80%) 3.242 3.4224.5 × 0.75 3.8 3.85 (80%)3.688 3.878 5 × 0.84.2 4.31 (80%) 4.134 4.334 6 × 1 55.13 (80%)4.9175.153 7 × 1 66.13 (80%) 5.917 6.153 8 × 1.25 6.8 6.85 (85%)6.647 6.912 9 × 1.257.8 7.85 (85%) 7.647 7.912 10 × 1.58.5 8.62 (85%) 8.376 8.676 11 × 1.59.5 9.62 (85%) 9.376 9.676 12 × 1.75 10.3 10.40 (85%) 10.106 10.441 14 × 2 12 12.2 (85%) 11.835 12.210 16 × 2 14 14.2 (85%) 13.835 14.210 18 × 2.5 15.5 15.7 (85%) 15.294 15.744 20 × 2.5 17.5 17.7 (85%) 17.294 17.744 22 × 2.5 19.5 19.2 (85%) 19.294 19.744 24 × 3 21 21.2 (85%) 20.752 21.252 27 × 3 24 24.2 (85%) 23.752 24.252 30 × 3.5 26.5 26.6 (90%) 26.211 26.771 33 × 3.5 29.5 29.6 (90%) 29.211 29.771 36 × 4 32 32.1 (90%) 31.670 32.270 39 × 4 35 35.1 (90%) 34.67035.270 42 × 4.5 37.5 37.6 (90%) 37.129 37.799 45 × 4.5 40.5 40.6 (90%) 40.129 40.799 48 × 5 43 43.1 (90%) 42.587 43.297注(1)M1.4以下等级:5H、M1.6以上等级:6H(2)基于JIS B 0209-1982标准螺纹下孔径表公制细牙螺纹 JIS B 0211-1982(单位:mm) (注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 2.5 × 0.35 2.2 2.22 (75%) 2.121 2.221 3 × 0.35 2.7 2.72 (75%) 2.621 2.721 3.5 × 0.35 3.23.22 (75%) 3.121 3.221 4 × 0.5 3.5 3.59 (75%) 3.459 3.5994.5 × 0.5 44.09 (75%) 3.959 4.099 5 × 0.5 4.5 4.59 (75%) 4.459 4.5995.5 × 0.5 55.09 (75%) 4.959 5.099 6 × 0.75 5.3 5.35 (80%) 5.188 5.378 7 × 0.756.3 6.35 (80%) 6.188 6.378 8 × 1 77.13 (80%) 6.917 7.153 8 × 0.75 7.37.35 (80%) 7.188 7.378 9 × 1 8 8.13 (80%) 7.917 8.153 9 × 0.75 8.38.35 (80%) 8.188 8.378 10 × 1.25 8.8 8.85 (85%) 8.647 8.912 10 × 1 99.13 (80%) 8.917 9.153 10 × 0.75 9.3 9.35 (80%) 9.188 9.378 11 × 1 1010.13 (80%) 9.917 10.153 11 × 0.75 10.3 10.35 (80%) 10.188 10.378 12 × 1.5 10.5 10.62 (85%) 10.376 10.676 12 × 1.25 10.8 10.85 (85%) 10.647 10.912 12 × 1 11 11.13 (80%) 10.917 11.153 14 × 1.5 12.5 12.62 (85%) 12.376 12.676 14 × 1 13 13.13 (80%) 12.917 13.153 15 × 1.5 13.5 13.62 (85%) 13.376 13.676 15 × 1 14 14.13 (80%) 13.917 14.153 16 × 1.5 14.514.62 (85%) 14.376 14.676 16 × 1 15 15.13 (80%) 14.917 15.153 17 × 1.515.5 15.62 (85%) 15.376 15.676 17 × 1 16 16.13 (80%) 15.917 16.153 18 × 2 16 16.2 (85%) 15.835 16.210 18 × 1.5 16.5 16.62 (85%) 16.37616.676 18 × 1 17 17.13 (80%) 16.917 17.153 20 × 2 18 18.2 (85%) 17.835 18.210 20 × 1.5 18.5 18.62 (85%) 18.376 18.676 20 × 1 19 19.13 (80%) 18.917 19.153 22 × 2 20 20.2 (85%) 19.835 20.210 22 × 1.5 20.5 20.62 (85%) 20.376 20.676 22 × 1 21 21.13 (80%) 20.917 21.153 24 × 2 22 22.2 (85%) 21.835 22.210 24 × 1.5 22.5 22.62 (85%) 22.376 22.676 24 × 1 23 23.13 (80%) 22.917 23.153 25 × 2 23 23.2 (85%) 22.835 23.21025 × 1.5 23.5 23.62 (85%) 23.376 23.676 25 × 1 24 24.13 (80%)23.917 24.153螺纹下孔径表公制细牙螺纹 JIS B 0211-1982(单位:mm)(注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 26 × 1.5 24.5 24.62 (85%) 24.376 24.676 27 × 2 25 25.2 (85%)24.835 25.210 27 × 1.5 25.5 25.62 (85%) 25.376 25.676 27 × 1 26 26.13 (80%) 25.917 26.153 28 × 2 26 26.2 (85%) 25.835 26.210 28 × 1.5 26.526.62 (85%) 26.376 26.676 28 × 1 27 27.13 (80%) 26.917 27.153 30 × 327 27.2 (85%) 26.752 27.252 30 × 2 28 28.2 (85%) 27.835 28.210 30 × 1.5 28.5 28.62 (85%) 28.376 28.676 30 × 1 29 29.13 (80%) 28.917 29.153 32 × 2 30 30.2 (85%) 29.835 30.210 32 × 1.5 30.5 30.62 (85%) 30.37630.676 33 × 3 30 30.2 (85%) 29.752 30.252 33 × 2 31 31.2 (85%) 30.83531.210 33 × 1.5 31.5 31.62 (85%) 31.376 31.676 35 × 1.5 33.5 33.62 (85%) 33.376 33.676 36 × 3 33 33.2 (85%) 32.752 33.252 36 × 2 34 34.2 (85%) 33.835 34.210 36 × 1.5 34.5 34.62 (85%) 34.376 34.676 38 × 1.536.5 36.62 (85%) 36.376 36.676 39 × 3 36 36.2 (85%) 35.752 36.252 39 × 2 37 37.2 (85%) 36.835 37.210 39 × 1.5 37.5 37.62 (85%) 37.376 37.676 40 × 3 37 37.2 (85%) 36.752 37.252 40 × 2 38 38.2 (85%) 37.835 38.210 40 × 1.5 38.5 38.62 (85%) 38.376 38.676 42 × 4 38 38.1 (90%) 37.670 38.270 42 × 3 39 39.2 (85%) 38.752 39.252 42 × 2 40 40.2 (85%) 39.835 40.210 42 × 1.5 40.5 40.62 (85%) 40.376 40.676 45 × 4 41 41.1 (90%) 40.670 41.270 45 × 3 42 42.2 (85%) 41.752 42.252 45 × 2 43 43.2 (85%) 42.835 43.210 45 × 1.5 43.5 43.62 (85%) 43.376 43.676 48 × 4 44 44.1 (90%) 43.670 44.27048 × 3 45 45.2 (85%) 44.752 45.25246.2 (85%) 48 × 2 46 45.835 46.21048 × 1.5 46.5 46.62 (85%) 46.376 46.67650 × 3 47 47.2 (85%) 46.752 47.25250 × 2 48 48.2 (85%) 47.835 48.21050 × 1.5 48.5 48.62 (85%) 48.376 48.676 注(1)等级:6H(2)基于JIS B 0211-1982标准螺纹下孔径表美制粗牙螺纹 (单位:mm)内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径NO.1 -64UNC 1.55 1.57 (65%) 1.425 1.5822 -56 1.8 1.86 (65%) 1.695 1.8713 -48 2.1 2.14 (65%) 1.941 2.1464 -40 2.3 2.36 (70%) 2.157 2.3855 -40 2.6 2.69 (70%) 2.487 2.6976 -32 2.8 2.86 (75%) 2.642 2.8958 -32 3.4 3.52 (75%) 3.302 3.53010 -24 3.9 3.91 (80%) 3.683 3.96212 -24 4.5 4.57 (80%) 4.344 4.5971/4 -20 5.1 5.25 (80%) 4.979 5.257 5/16 -18 6.6 6.72 (80%) 6.4016.7313/8 -16 8 8.15 (80%) 7.798 8.153 7/16 -14 9.4 9.5(80%) 9.144 9.550 1/2 -13 10.8 11.0 (80%) 10.592 11.0239/16 -12 12.2 12.3 (85%) 11.989 12.4465/8 -11 13.6 13.8 (85%) 13.386 13.8683/4 -10 16.5 16.8 (80%) 16.307 16.8407/8 - 9 19.5 19.6 (85%) 19.177 19.7611 - 8 22.2 22.5 (85%) 21.971 22.6061 1/8 - 7 25 25.2 (85%) 24.638 25.3491 1/4 - 7 28.2 28.4 (85%) 27.813 28.5241 3/8 - 6 30.8 31.0 (85%) 30.353 31.1151 1/2 - 6 34 34.2 (85%) 33.528 34.2901 3/4 - 5 39.5 39.8 (85%) 38.964 39.8272 - 4 45.2 45.3 (90%) 44.679 45.593螺纹下孔径表美制细牙螺纹 (单位:mm)内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 NO. 0 1.25 1.30 (65%) 1.182 1.305 -80UNF1 -72 1.55 1.61 (65%) 1.474 1.6122 -64 1.85 1.90 (65%) 1.756 1.9123 -56 2.1 2.17 (70%) 2.025 2.1974 -48 2.4 2.44 (70%) 2.271 2.4585 -44 2.7 2.74 (70%) 2.551 2.7406 -40 2.9 3.02 (70%) 2.820 3.0228 -36 3.5 3.59 (75%) 3.404 3.60610 -32 4.1 4.14 (80%) 3.963 4.16512 -28 4.6 4.70 (80%) 4.496 4.7241/4 -28 5.5 5.56 (80%) 5.360 5.588 5/16 -24 6.9 7.02 (80%) 6.782 7.0353/8 -24 8.5 8.61 (80%) 8.382 8.6367/16 -20 9.9 10.01 (80%) 9.729 10.0331/2 -20 11.5 11.60 (80%) 11.329 11.6079/16 -18 12.9 13.07 (80%) 12.751 13.0815/8 -18 14.5 14.65 (80%) 14.351 14.6813/4 -16 17.5 17.59 (85%) 17.323 17.6787/8 -14 20.5 20.6 (85%) 20.270 20.6751 -12 23.2 23.5 (85%) 23.114 23.5711 1/8 -12 26.5 26.7 (80%) 26.289 26.7461 1/4 -12 29.5 29.9 (80%) 29.464 29.9211 3/8 -12 32.8 33.0 (85%) 32.639 33.0961 1/2 -12 36 36.2 (85%) 35.814 36.271螺纹下孔径表缝纫机螺纹(SM) (单位:mm)2级内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 SM 1/16 - 1.25 1.28 (75%) 1.211 1.281 805/64 - 64 1.55 1.57 (80%) 1.513 1.593 3/32 -100 2.10 2.15 (70%)2.081 2.156 3/32 - 56 1.85 1.91 (80%) 1.841 1.936 1/8 - 44 2.50 2.58 (80%) 2.485 2.605 1/8 - 40 2.45 2.52 (80%) 2.421 2.551 9/64 - 40 2.852.91 (80%) 2.818 2.948 11/64 - 403.65 3.71 (80%) 3.612 3.742 3/16 - 323.90 3.94 (80%) 3.820 3.980 3/16 - 28 3.70 3.82 (80%) 3.684 3.844 7/32 - 324.70 4.73 (80%) 4.614 4.774 15/64 - 28 4.905.01 (80%) 4.875 5.0551/4 - 40 5.60 5.69 (80%) 5.596 5.726 1/4 - 28 5.30 5.41 (80%) 5.2725.452 缝纫机螺纹(SM) (单位:mm)2级内螺纹小径 2B 级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 SM 1/4 - 5.10 5.25 (80%) 5.086 5.266 249/32 - 28 6.10 6.20 (80%) 6.066 6.2569/32 - 20 5.70 5.82 (80%) 5.634 5.8245/16 - 28 6.90 6.00 (80%) 6.860 7.0505/16 - 24 6.70 6.84 (80%) 6.674 6.8645/16 - 18 6.30 6.38 (85%) 6.254 6.4443/8 - 28 8.50 8.58 (80%) 8.447 8.6373/8 - 18 7.90 7.97 (85%) 7.843 8.0537/16 - 28 10.10 10.17 (80%) 10.034 10.2247/16 - 16 9.30 9.36 (85%) 9.220 9.4401/2 - 28 11.70 11.76 (80%) 11.622 11.8121/2 - 20 11.30 11.38 (80%) 11.190 11.4101/2 - 12 10.30 10.36 (85%) 10.180 10.420 螺纹下孔径表英制粗牙螺纹 (单位:mm)、切削速度与切削液切削速度(m/min) 切削液加工材料高速同步丝水溶性直槽丝攻螺旋丝攻先端丝攻钨钢丝攻无屑丝攻管用丝攻油性半干式干式攻 (乳化液)低碳素钢 C0.25,以下 8~13 8~13 15~25 , 8~13 27~32 3~6 ◎ ? ? ?C0.25,中碳素钢7~12 7~12 10~15 , 7~10 27~32 3~6 ◎ ? ? ? 0.45,高碳素钢 C0.45,以上6~9 6~9 8~13 , 5~8 22~27 2~5 ◎ ? ? ? 合金钢SCM 7~12 7~12 10~15 , 5~8 22~27 2~5 ◎ ? ? ?3~5 3~5 4~6 调质钢25,45HRC , , , 2~5 ◎ ? , , (4~8) (4~8) (6~10) 不锈钢 SUS 4~7 5~8 8~13 , 5~10 , 3~6 ◎ ? , ,SUS630 不锈钢3~5 3~5 4~6 , , , 2~5 ◎ , , , SUS631工具钢SKD 6~9 6~9 7~10 , , , 2~5 ◎ , , , 铸钢 SC 6~11 6~1110~15 , , 17~22 2~5 ◎ ? , , 铸铁FC 10~15 , , 10~20 , , 2~5 ◎ ? ? ? 球铸铁FCD 7~12 7~12 10~20 10~20 , , 4~8 ◎ ? ? ,铜 Cu 6~9 6~11 7~12 10~20 7~12 27~32 2~5 ? ? , , 黄铜‧ Bs‧BsC 10~15 10~20 15~25 15~25 7~12 27~32 5~10 ? ? ? ? 黄铜铸件青铜‧ PB‧PBC 6~11 6~11 10~20 10~20 7~12 , 6~11 ? ? , , 青铜铸件变形AL 10~20 10~20 10~25 , 10~20 100~300 5~10 ◎ ? ? , 铝合金铝合金 AC‧ADC 10~15 10~15 15~20 10~20 10~15 80~300 10~15 ◎ ? ? , 铸件镁合金MC 7~12 7~12 10~15 10~20 , , 10~15 ◎ ? ? , 锌铸件 ZDC7~12 7~12 10~15 10~20 7~12 27~100 10~15 ◎ ? ? ,Thermo Setting 热硬塑料 10~20 , , 15~25 , , 5~10 , ? ? ? Plastic 热可塑性Thermo 10~20 10~15 10~20 10~20 , 27~32 5~10 , ? ? ? 塑料Plastic。