牙距与钻孔直径表
公制英制螺纹牙距表完整
公制英制螺纹牙距表(可以直接使用，可编辑实用优秀文档，欢迎下载）公制牙距英制美制称呼牙数粗牙细牙极细牙粗牙细牙韦氏牙M3 0.5 0.35 4# 1.9 40 48M4 0.7 0.5 6# 3.5 32 40M5 0.8 0.5 8# 4.2 32 36M6 1.0 0.75 10# 4.8 24 32M7 1 0.75 12# 5.5 24 28M8 1.25 1.0 0.75 1/4 6.35 20 28 20 M10 1.5 1.25 1.0 5/16 7.94 18 24 18 M12 1.75 1.5 1.25 3/8 9.53 16 24 16 M14 2.0 1.5 1.0 7/16 11.11 14 20 14 M16 2.0 1.5 1.0 1/2 12.7 13 20 12 M18 2.5 2.0 1.5 9/16 14.29 12 18 12 M20 2.5 2.0 1.5 5/8 15.86 11 18 11 M22 2.5 2.0 1.5 3/4 19.05 10 16 10 M24 3.0 2.0 1.5 7/8 22.23 9 14 9 M27 3.0 2.0 1.5 1 25.4 8 12 8 M30 3.5 3.0 2.0螺纹的表示法和标注螺纹若按真实投影作图，比较麻烦。
为了简化作图，国家标准《机械制图》GB/T4459.1—1995规定了螺纹的表示法。
按此表示法作图并加以标注，就能清楚地表示螺纹的类型、规格和尺寸。
(一)螺纹的表示法1、外螺纹的表示法(图9-8)图9-8 外螺纹的表示法(1)外螺纹不论其牙型如何，螺纹牙顶圆的投影用粗实线表示；牙底圆的投影用细实线表示，在螺杆的倒角或倒圆部分也应画出。
画图时小径尺寸可近似地取d l≈0.85d。
(2)有效螺纹的终止界线(简称螺纹终止线)在视图中用粗实线表示；在剖视图中则按图9-8b主视图的画法(即终止线只画螺纹牙型高的一小段)，剖面线必须画到表示牙顶圆投影的粗实线为止。
标准零部件数据参数及计算公式
M2.6 0.45 2.2±0.03 2.38±0.03 2.23
M3 0.5 2.5 ±0.04 2.75 ±0.04 2.59
M3.5 0.6 2.9±0.04 3.2±0.04 3.01
M4 0.7 3.3 ±0.05 3.65 ±0.05 3.42
M4.5 0.75 3.8±0.05 3.92
M14 2.0 1.5 1.0 7/16 11.11 14 20 14
M16 2.0 1.5 1.0 1/2 12.7 13 20 12
M18 2.5 2.0 1.5 9/16 14.29 12 18 12
M20 2.5 2.0 1.5 5/8 15.86 11 18 11
M22 2.5 2.0 1.5 3/4 19.05 10 16 10
M5 0.8 0.5 8# 4.2 32 36
M6 1.0 0.75 10# 4.8 24 32
M7 1.0 0.75 12# 5.5 24 28
M8 1.25 1.0 0.75 1/4 6.35 20 28 20
M10 1.5 1.25 1.0 5/16 7.94 18 24 18
M12 1.75 1.5 1.25 3/8 9.53 16 24 16
螺栓、螺 钉、螺柱 螺纹的公 称长度
螺纹规 M3 M4 M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60 M64
粗牙螺距 12 14 16 18 22 26 30 34 38 42 46 50 54 60 66 72 78 84 90 96 102 ----
以下是常用粗牙公制螺纹钻底孔尺寸对应表。一般 情况等于外径-螺距
公制螺栓、螺纹钻孔尺寸表
螺纹d
M2 M2.5 M3 M3.5 M4 M4.5 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24
通孔直径dh
精装H12 中装H13 粗装H14
2.2
2.4
2.6
2.7
2.9
3.1
3.2
3.4
3.6
3.7
3.9
4.2
4.3
4.5
4.8
4.8
5
5.3
5.3
5.5
5.8
6.
9
10
10.5
11
12
13
13.5
14.5
15
15.5
16.5
17
17.5
18.5
19
20
21
21
22
24
23
24
26
25
26
28
螺纹d
M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60
通孔直径dh
精装H12 中装H13 粗装H14
1 0.75 1.25
1 0.75 1.5
1 1.25 0.75 1.75 1.5 1.25
1 2 1.5 1 2 1.5 1 2.5 1.5 1 2.5 2 1.5 1
钻头 直径
1.6 1.7 2.5 2.6 3.3 3.5 4.2 4.5 5 5.3 6.8 7 7.3 8.5 9 8.8 9.3 10.2 10.5 10.8 11 12 12.5 13 14 14.5 15 15.5 16.5 17 17.5 18 18.5 19
4
44
英制螺纹_规格__牙型_对照表
UNRC 圆弧牙底粗牙系列统一螺纹
UNRF 圆弧牙底细牙系列统一螺纹
UNREF 圆弧牙底超细牙系列统一螺纹
UNRS 圆弧牙底特殊系列统一螺纹
表中螺距单位为每英寸牙数。钻孔直径为攻丝推荐 钻孔尺寸，单位为毫米。
公称直径
粗牙螺距 细牙螺距 超细牙螺距 钻孔直径
（英寸〖毫米〗）
（UNC） （UNF） （UNEF） （粗牙）
4 4.6 5.4 6.9 8.4 10 11.5 13.1 14.7 17.5 20.6 23.4
编辑本段公制、美制和英制螺纹标准
NPT，PT，G 都是管螺纹．
NPT 是 National (American) Pipe Thread 的缩写， 属于美国标准的 60 度锥管螺纹，用于北美地区．国家 标准可查阅 GB/T12716-1991
PT 是 Pipe Thread 的缩写，是 55 度密封圆锥管螺纹，属惠氏螺纹家族，多 用于欧洲及英联邦国家．常用于水及煤气 管行业，锥度规定为 1:16． 国家标准可 查阅 GB/T7306-2000
PTF-SAE SHORT 干密封短型锥管螺纹 美国标准 ANSIB1.20.3 Ⅱ型
NPSF 干密封标准型燃油用直管内螺纹 美国标准 ANSIB1.20.3 Ⅲ型
NPS1 干密封标准型一般用直管内螺纹 美国标准 ANSIB1.20.3 Ⅳ型
ACME③ 一般用途的梯形螺纹 美国标准ANSIB1.5 牙型角为29°的英制传动螺纹
32
40
2.7
#8 0.164 〖4.166〗
32
36
3.4
#10 0.190 〖4.826〗
24
32
3.7
#12 0.216 〖5.486〗
德制 PG制螺纹标准与技术数据
德制 PG制螺纹标准与技术数据德国PG螺纹规格尺寸每英寸牙数规格大径螺距中径小径钻孔直径 Pg7 12.50 1.270 2011.89 11.28 11.40 Pg9 15.20 1.411 18 14.53 13.86 14.00 Pg11 18.60 1.411 18 17.93 17.26 17.25 Pg13.5 20.40 1.411 18 19.73 19.06 19.00 Pg16 22.50 1.411 18 21.83 21.16 21.25 Pg21 28.30 1.588 16 27.54 26.78 26.75 Pg29 37.00 1.588 16 36.24 35.48 35.50 Pg36 47.00 1.588 16 46.24 45.48 45.50德国PG制螺纹标准与技术数据螺纹规格螺距外径C1 底径钻头螺牙角度7 1.27 12.5 11.28 12.7 809 1.41 15.2 13.86 15.4 8011 1.41 18.6 17.26 18.8 8013.5 1.41 20.4 19.06 20.7 8016 1.41 22.5 21.16 22.8 8021 1.587 28.3 26.78 28.6 8029 1.587 37.0 36.48 37.4 8036 1.587 47.0 45.58 47.5 8042 1.587 54.0 52.48 54.5 8048 1.587 59.3 57.78 59.8 80公制螺纹标准与技术数据螺纹规格螺距外径C1 底径钻头螺牙角度12 1.5 12 10.5 12.5 60 ?16 1.5 16 14.5 16.5 60 ?18 1.5 18 16.5 18.5 60 ?20 1.5 20 18.5 20.5 60 ?24 1.5 24 22.5 24.5 60 ?27 2.0 27 25.0 27.5 60 ?30 2.0 30 28.0 30.5 60 ?36 2.0 36 34.0 36.5 60 ?4 2.0 48 46.0 48.5 60 ?56 2.0 56 54.0 56.5 60 ?64 2.0 64 62.0 64.5 60 ?76 2.0 75 73.5 75.5 60 ?80 2.0 80 78.0 80.5 60 ?90 2.0 90 88.0 90.5 60螺纹标准的一种，又称米制螺纹，与英制螺纹最大的区别是螺距用毫米计量。
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)。
机加工螺纹攻牙钻孔直径对照表
机加工螺纹攻牙钻孔直径对照表螺纹攻牙钻孔直径对照表：公制粗螺纹规格标准径2级牙钻孔径最大最小M1.0×0.250.750.7850.729M1.1×0.250.850.8850.829M1.2×0.250.950.9850.929M1.4×0.3 1.10 1.142 1.075M1.6×0.35 1.25 1.321 1.221M1.7×0.35 1.35 1.421 1.321M1.8×0.35 1.45 1.521 1.421M2.0×0.4 1.60 1.679 1.567M2.2×0.45 1.75 1.838 1.713M2.3×0.4 1.90 1.979 1.867M2.5×0.45 2.10 2.138 2.013M2.6×0.45 2.20 2.238 2.113M3.0×0.5 2.50 2.599 2.459M3.0×0.6 2.40 2.44 2.280M3.5×0.6 2.90 3.010 2.850M4.0×0.7 3.30 3.422 3.242M4.0×0.75 3.25 3.326 3.106M4.5×0.75 3.80 3.878 3.688M5.0×0.8 4.20 4.334 4.134M5.0×0.9 4.10 4.170 3.930M6.0×1.0 5.00 5.153 4.917M7.0×1.0 6.00 6.153 5.917M8.0×1.25 6.80 6.912 6.647M9.0×1.257.807.9127.647M10×1.58.508.6768.376M11×1.59.509.6769.376M12×1.7510.3010.44110.106M14×2.012.0012.21011.735M16×2.014.0014.21013.835M18×2.515.5015.74415.294M20×2.517.5017.74417.294M22×2.519.5019.74419.294M24×3.021.0021.25220.752M27×3.024.0024.25223.752M30×3.526.5026.77126.211公制细螺纹规格标准径2级牙钻孔径最大最小M1.0×0.20.800.8210.783M1.1×0.20.900.9210.883M1.2×0.2 1.00 1.0210.983M1.4×0.2 1.20 1.2210.183M1.6×0.2 1.40 1.421 1.383M1.7×0.2 1.45 1.500 1.460M1.8×0.2 1.60 1.621 1.583M2.0×0.25 1.75 1.785 1.729M2.0×0.25 1.75 1.785 1.729 M2.2×0.25 1.95 1.985 1.929 M2.3×0.25 2.05 2.061 2.001 M2.5×0.35 2.20 2.221 2.121 M2.6×0.35 2.20 2.246 2.186 M3.0×0.35 2.70 2.721 2.621 M3.5×0.35 3.20 3.221 3.121 M4.0×0.5 3.50 3.599 3.459 M4.5×0.5 4.00 4.099 3.959 M5×0.5 4.50 4.599 4.459 M5.5×0.5 5.00 5.099 4.959 M6.0×0.75 5.30 5.378 5.188 M6.0×0.5 5.50 5.550 5.400 M7.0×0.75 6.30 6.37861.88 M7.0×0.5 6.50 6.55064.00 M8.0×1.07.007.153 6.917 M8.0×0.757.307.3787.188 M8×0.57.507.5207.400 M9×1.08.008.1537.917 M9×0.758.308.3788.188 M10×1.258.808.9128.647 M10×1.09.009.1538.917 M10×0.759.309.3789.188 M10×0.59.509.5209.400 M11×1.010.0010.1539.917 M11×0.7510.3010.37810.188 M11×1.510.5010.67610.376 M12×1.2510.8010.91210.647公制细螺纹规格标准径2级牙钻孔径最大最小M12×1.011.0011.15310.917 M12×0.511.5011.52011.4M14×1.512.5012.67612.376 M14×1.013.0013.15312.917 M15×1.513.5013.67613.376 M15×1.014.0014.15313.917 M16×1.514.5014.67614.376 M16×1.015.0015.15314.917 M17×1.515.5015.67615.376 M17×1.016.0016.15315.917 M18×2.016.0016.21015.835 M18×1.516.5016.67016.376 M18×1.017.0017.15316.917 M20×2.018.0018.21017.835 M20×1.518.5018.67618.376 M20×1.019.0019.15318.917 M20×2.020.0020.21019.835 M22×1.520.5020.67620.376 M22×1.021.0021.15320.917 M24×2.022.0022.21021.835 M24×1.522.5022.67622.376 M24×1.023.0023.15322.917 M25×2.023.0023.21022.835M25×1.523.5023.67623.376M25×1.523.5023.67623.376M25×1.024.0024.15323.917M26×1.524.5024.67624.376M27×2.025.0025.21024.835M27×1.525.5025.67625.376M27×1.026.0026.15325.917M28×2.026.0026.21025.835M28×1.526.5026.67626.376M28×1.027.0027.15326.917M30×3.027.0027.25226.752M30×2.028.0028.21027.835M30×1.528.5028.67628.376M30×1.029.0029.15328.917M32×2.030.0030.21029.835M32×1.530.5030.67630.376M33×3.030.0030.25229.752M33×2.031.0031.21030.835M33×1.531.5031.37631.376M35×1.533.5033.67633.376M36×3.033.0033.25232.752M36×2.034.0034.21033.835M36×1.534.5034.67634.376美制细螺纹规格(UNF)标准径2级牙钻孔径最大最小番数牙外径NO.0-80(1.524) 1.25 1.305 1.182 NO.1-72(1.854) 1.55 1.612 1.474 NO.2-64(2.184) 1.85 1.912 1.756 NO.3-56(2.515) 2.10 2.197 2.025 NO.4-48(2.845) 2.40 2.458 2.271 NO.5-44(3.175) 2.70 2.740 2.551 NO.6-40(3.505) 2.90 3.022 2.820 NO.8-36(4.166) 3.50 3.606 3.404 NO.10-32(4.826)4.10 4.165 3.963 NO.12-28(5.846)4.60 4.724 4.496 1/4 -28 5.50 5.588 5.360 5/16 -24 6.907.035 6.782 3/8 -248.508.6368.382 7/16 -209.9010.0339.729 1/2 -2011.5011.60711.329 9/16 -1812.9013.08112.751 5/8 -1814.5014.68114.351 3/4 -1617.5014.67817.323 7/8 -1420.5020.67520.270 1 -1223.2023.57123.114 1-1/8 -1226.5026.74626.289 1-1/4 -1229.5029.92129.464 1-3/8 -1232.8033.09632.464 1-1/2 -1236.0036.27035.814无屑丝攻钻孔径规格精度等级RH4.5.6RH7.8RH9M1.0×0.250.860.88-M1.1×0.250.960.98-M1.2×0.25 1.06 1.08-M1.2×0.25 1.06 1.08-M1.4×0.3 1.24 1.25-M1.6×0.35 1.41 1.43-M1.7×0.35 1.51 1.53-M1.8×0.35 1.61 1.63-M2.0×0.4 1.78 1.80-M2.2×0.45 1.95 1.98-M2.3×0.4 2.08 2.10-M2.5×0.45 2.25 2.28-M2.6×0.45 2.35 1.38-M3.0×0.5 2.73 2.75-M3.0×0.6 3.17 3.20-M4.0×0.7 3.62 3.65 3.69M5.0×0.8 4.56 4.60 4.64M6.0×1.0 5.45 5.50 5.55M7.0×1.0 6.45 6.50 6.55M8.0×1.257.317.387.44M10×1.59.189.259.32M10×1.259.319.389.44M12×1.7511.0411.1211.21M12×1.2511.3111.3811.44美制管螺纹规格(UNEF)标准径2级牙钻孔径最大最小NO.12 -32 4.70 4.826 4.623 1/4 -32 5.60 5.690 5.486 5/16 -327.107.2647.087 3/8 -328.708.8658.661 7/16 -2810.2010.33810.135 1/2 -2811.8011.93811.709 9/16 -2813.2013.38613.132 5/8 -2414.8014.98614.732 3/4 -2017.8017.95817.678 7/8 -2021.0021.13320.853 1 -2024.0024.30824.028美制粗螺纹规格(UNC)标准径2级牙钻孔径番数牙外径最大最小NO.1-64(1.854) 1.55 1.582 1.425 NO.2-56(2.184) 1.80 1.871 1.695 NO.3-48(2.515) 2.10 2.146 1.941 NO.4-40(2.845) 2.30 2.385 2.157 NO.5-40(3.175) 2.60 2.697 2.487 NO.6-32(3.505) 2.80 2.895 2.642 NO.8-32(4.166) 3.40 3.530 3.302 NO.10-24(4.826)3.90 3.962 3.682 NO.12-24(5.846)4.50 4.597 4.344 1/4 -20 5.10 5.257 4.979 5/16 -18 6.60 6.731 6.401 3/8 -168.008.1537.987 7/16 -149.409.5009.144 1/2 -1310.8011.02310.592 9/16 -1212.2012.44611.989 5/8 -1113.6012.86813.386 3/4 -1016.2016.84016.307 7/8 -919.5019.76119.177 1 -822.2022.60621.9711 -822.2022.60621.971 1-1/8 -725.0025.34924.638 1-1/4 -728.2028.52427.813 1-3/8 -630.8031.11530.353 1-1/2 -634.0034.29033.528 1-3/4 -539.5039.82738.964 2 -4-1/245.2045.59344.679英制螺纹规格钻孔径硬材软材W1/8 - 40 2.65 2.60W5/32 - 323.25 3.20W3/16 - 243.75 3.70W1/4 - 20 5.10 5.00W5/16 - 186.60 6.50W3/8 - 168.007.90W7/16 - 149.409.30W1/2 - 1210.7010.50W9/16 - 1212.3012.00W5/8 - 1113.7013.50W3/4 - 1016.7016.50W7/8 - 919.5019.30W1 - 822.4022.00W1-1/8 - 725.0024.80W1-1/4 - 728.3028.00英制管螺纹规格标准径钻孔径最大最小PS1/16 -28 6.50 6.632 6.490PS1/8 -288.508.6378.495PS1/4 - 1911.4011.54911.341PS3/8 - 1915.0015.05414.846PS1/2 - 1418.5018.77318.489PS3/4 - 1424.0024.25923.975PS1 - 1130.2030.47130.111PS1-1/4 -1138.8039.13238.772PS1-1/2 -1144.8045.02544.665PS2 - 1156.5056.83656.476英制管螺纹规格标准径有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径使用绞刀时不用绞刀时PT1/16 -28 6.10 6.2 6.244 6.384 PT1/8 -288.108.28.2498.388 PT1/4 -1910.701110.96211.174 PT3/8 -1914.2014.514.44814.658 PT1/2 -1417.601817.97918.263 PT3/4 -1423.0023.523.37823.663 Pt1 -1129.0029.529.45929.822 PT1-1/4 -1137.503837.97638.339 PT1-1/2 -1143.404443.86944.232 Pt2 -1154.9055.555.41255.844美制螺纹滚造径规格钻孔径规格钻孔径NPT NPS使用绞刀时不用绞刀时1/16 -27 6.1 6.25 6.35 1/8 -278.338.438.74 1/4 -1810.7211.1311.13 3/8 -1814.2714.2714.68 1/2 -1417.4817.8618.26 3/4 -1422.6323.0123.42 1 -11-1/228.5828.9829.36 1-1/4-11-1/237.3137.6938.1 1-1/2-11-1/243.6644.0444.45 2 -11-1/255.5855.9656.36英制螺纹滚造径规格滚造径W 3/16 - 24 4.08 - 4.05W 1/4 - 20 5.51 - 5.46W 5/16 - 187.01 - 6.95W 3/8 - 168.48 - 8.41W 7/16 - 149.92 - 9.85W 1/2 - 1211.31 - 11.24W 9/16 -1212.89 - 12.82公制螺纹规格滚造径M3.0×0.6 2.56 2.53M3.5×0.6 3.06 3.03M4.0×0.7 3.49 3.45M4.0×0.75 3.45 3.41M4.5×0.75 3.96 3.92M5.0×0.8 4.43 4.38M5.0×0.9 4.36 4.31M6.0×1.0 5.30 5.25M7.0×1.0 6.30 6.25M8.0×1.07.28 - 7.23M8.0×1.257.12 - 7.07M9.0×1.258.12 - 8.07M10×1.259.10 - 9.04M10×1.58.97 - 8.91M11×1.59.97 - 9.91M12×1.510.92 - 10.87M12×1.7510.79 - 10.73M14×2.012.63 - 12.56M16×2.014.63 - 14.56M18×2.516.31 - 16.23M20×2.518.31 - 18.23M22×2.520.31 - 20.23针车用螺纹规格(UNC)滚造径SM 1/8 40 2.735 -2.688SM 1/8 44 2.769 -2.722SM 9/64 40 3.128 -3.083SM 11/64 40 3.855 -3.805SM 3/16 32 4.205 -4.155SM 3/16 28 4.143 -4.093SM 7/32 32 5.003 -4.955SM 15/64 28 5.325 -4.955SM 1/4 40 5.890 -5.735SM 1/4 40 5.890 -5.735 SM 1/4 28 5.721 -5.366 SM 9/32 28 6.528 -6.648 SM 11/32 288.092 -8.432 SM 3/8 298.880 -8.015 SM 7/16 3010.466 -10.401 SM 7/16 1610.037 -9.967 SM 1/2 2011.819 -11.749 SM 9/16 2013.400 -13.425美制粗螺纹规格(UNC)滚造径NO.5-40 2.70 - 2.67 NO.6-32 2.95 - 2.91 NO.8-32 3.60 - 3.57 NO.10-24 4.09 - 4.05 NO.12-24 4.75 - 4.701/4 -20 5.50 - 5.455/16 -18 6.98 - 6.933/8 -168.45 - 8.407/16 -149.89 - 9.831/2 -1311.39 - 11.32 9/16 -1212.87 - 12.80美制细螺纹规格(UNF)滚造径NO.5-44 2.73 - 2.70 NO.6-40 3.05 - 3.02 NO.8-36 3.66 - 3.63 NO.10-32 4.26 - 4.80 NO.12-28 4.84 - 4.801/4 -28 5.72 - 5.685/16 -247.20 - 7.163/8 -248.79 - 8.747/16 -2010.23 - 10.18 1/2 -2011.82 - 11.76。
机加工螺纹攻牙钻孔直径对照表
机加工螺纹攻牙钻孔直径对照表螺纹攻牙钻孔直径对照表：公制粗螺纹规格标准径2级牙钻孔径最大最小M1.0×0.250.75 0.785 0.729 M1.1×0.250.85 0.885 0.829 M1.2×0.250.95 0.985 0.929 M1.4×0.3 1.10 1.142 1.075 M1.6×0.35 1.25 1.321 1.221 M1.7×0.35 1.35 1.421 1.321 M1.8×0.35 1.45 1.521 1.421 M2.0×0.4 1.60 1.679 1.567 M2.2×0.45 1.75 1.838 1.713 M2.3×0.4 1.90 1.979 1.867 M2.5×0.45 2.10 2.138 2.013 M2.6×0.45 2.20 2.238 2.113 M3.0×0.5 2.50 2.599 2.459 M3.0×0.6 2.40 2.44 2.280 M3.5×0.6 2.90 3.010 2.850 M4.0×0.7 3.30 3.422 3.242 M4.0×0.75 3.25 3.326 3.106 M4.5×0.75 3.80 3.878 3.688 M5.0×0.8 4.20 4.334 4.134 M5.0×0.9 4.10 4.170 3.930 M6.0×1.0 5.00 5.153 4.917 M7.0×1.0 6.00 6.153 5.917 M8.0×1.25 6.80 6.912 6.647 M9.0×1.257.80 7.912 7.647 M10×1.58.50 8.676 8.376 M11×1.59.50 9.676 9.376 M12×1.7510.30 10.441 10.106 M14×2.012.00 12.210 11.735 M16×2.014.00 14.210 13.835 M18×2.515.50 15.744 15.294 M20×2.517.50 17.744 17.294M22×2.519.50 19.744 19.294 M24×3.021.00 21.252 20.752 M27×3.024.00 24.252 23.752 M30×3.526.50 26.771 26.211 公制细螺纹规格标准径2级牙钻孔径最大最小M1.0×0.20.80 0.821 0.783 M1.1×0.20.90 0.921 0.883 M1.2×0.2 1.00 1.021 0.983 M1.4×0.2 1.20 1.221 0.183 M1.6×0.2 1.40 1.421 1.383 M1.7×0.2 1.45 1.500 1.460 M1.8×0.2 1.60 1.621 1.583 M2.0×0.25 1.75 1.785 1.729 M2.2×0.25 1.95 1.985 1.929 M2.3×0.25 2.05 2.061 2.001 M2.5×0.35 2.20 2.221 2.121 M2.6×0.35 2.20 2.246 2.186 M3.0×0.35 2.70 2.721 2.621 M3.5×0.35 3.20 3.221 3.121 M4.0×0.5 3.50 3.599 3.459 M4.5×0.5 4.00 4.099 3.959 M5×0.5 4.50 4.599 4.459 M5.5×0.5 5.00 5.099 4.959 M6.0×0.75 5.30 5.378 5.188 M6.0×0.5 5.50 5.550 5.400 M7.0×0.75 6.30 6.378 61.88 M7.0×0.5 6.50 6.550 64.00 M8.0×1.07.00 7.153 6.917 M8.0×0.757.30 7.378 7.188 M8×0.57.50 7.520 7.400 M9×1.08.00 8.153 7.917 M9×0.758.30 8.378 8.188 M10×1.258.80 8.912 8.647 M10×1.09.00 9.153 8.917 M10×0.759.30 9.378 9.188M11×1.010.00 10.153 9.917 M11×0.7510.30 10.378 10.188 M11×1.510.50 10.676 10.376 M12×1.2510.80 10.912 10.647 公制细螺纹规格标准径2级牙钻孔径最大最小M12×1.011.00 11.153 10.917 M12×0.511.50 11.520 11.4 M14×1.512.50 12.676 12.376 M14×1.013.00 13.153 12.917 M15×1.513.50 13.676 13.376 M15×1.014.00 14.153 13.917 M16×1.514.50 14.676 14.376 M16×1.015.00 15.153 14.917 M17×1.515.50 15.676 15.376 M17×1.016.00 16.153 15.917 M18×2.016.00 16.210 15.835 M18×1.516.50 16.670 16.376 M18×1.017.00 17.153 16.917 M20×2.018.00 18.210 17.835 M20×1.518.50 18.676 18.376 M20×1.019.00 19.153 18.917 M20×2.020.00 20.210 19.835 M22×1.520.50 20.676 20.376 M22×1.021.00 21.153 20.917 M24×2.022.00 22.210 21.835 M24×1.522.50 22.676 22.376 M24×1.023.00 23.153 22.917 M25×2.023.00 23.210 22.835 M25×1.523.50 23.676 23.376 M25×1.024.00 24.153 23.917 M26×1.524.50 24.676 24.376 M27×2.025.00 25.210 24.835 M27×1.525.50 25.676 25.376 M27×1.026.00 26.153 25.917M28×1.526.50 26.676 26.376 M28×1.027.00 27.153 26.917 M30×3.027.00 27.252 26.752 M30×2.028.00 28.210 27.835 M30×1.528.50 28.676 28.376 M30×1.029.00 29.153 28.917 M32×2.030.00 30.210 29.835 M32×1.530.50 30.676 30.376 M33×3.030.00 30.252 29.752 M33×2.031.00 31.210 30.835 M33×1.531.50 31.376 31.376 M35×1.533.50 33.676 33.376 M36×3.033.00 33.252 32.752 M36×2.034.00 34.210 33.835 M36×1.534.50 34.676 34.376 美制细螺纹规格(UNF) 标准径2级牙钻孔径最大最小番数牙外径NO.0-80(1.524) 1.25 1.305 1.182 NO.1-72(1.854) 1.55 1.612 1.474 NO.2-64(2.184) 1.85 1.912 1.756 NO.3-56(2.515) 2.10 2.197 2.025 NO.4-48(2.845) 2.40 2.458 2.271 NO.5-44(3.175) 2.70 2.740 2.551 NO.6-40(3.505) 2.90 3.022 2.820 NO.8-36(4.166) 3.50 3.606 3.404 NO.10-32(4.826) 4.10 4.165 3.963 NO.12-28(5.846) 4.60 4.724 4.496 1/4 -28 5.50 5.588 5.360 5/16 -24 6.90 7.035 6.782 3/8 -24 8.50 8.636 8.382 7/16 -20 9.90 10.033 9.729 1/2 -20 11.50 11.607 11.329 9/16 -18 12.90 13.081 12.751 5/8 -18 14.50 14.681 14.3513/4 -16 17.50 14.678 17.323 7/8 -14 20.50 20.675 20.270 1 -12 23.20 23.571 23.114 1-1/8 -12 26.50 26.746 26.289 1-1/4 -12 29.50 29.921 29.464 1-3/8 -12 32.80 33.096 32.464 1-1/2 -12 36.00 36.270 35.814 无屑丝攻钻孔径规格精度等级RH4.5.6 RH7.8 RH9M1.0×0.250.86 0.88 -M1.1×0.250.96 0.98 -M1.2×0.25 1.06 1.08 -M1.4×0.3 1.24 1.25 -M1.6×0.35 1.41 1.43 -M1.7×0.35 1.51 1.53 -M1.8×0.35 1.61 1.63 -M2.0×0.4 1.78 1.80 -M2.2×0.45 1.95 1.98 -M2.3×0.4 2.08 2.10 -M2.5×0.45 2.25 2.28 -M2.6×0.45 2.35 1.38 -M3.0×0.5 2.73 2.75 -M3.0×0.6 3.17 3.20 -M4.0×0.7 3.62 3.65 3.69 M5.0×0.8 4.56 4.60 4.64 M6.0×1.0 5.45 5.50 5.55 M7.0×1.0 6.45 6.50 6.55 M8.0×1.257.31 7.38 7.44 M10×1.59.18 9.25 9.32 M10×1.259.31 9.38 9.44 M12×1.7511.04 11.12 11.21 M12×1.2511.31 11.38 11.44 美制管螺纹规格(UNEF) 标准径2级牙钻孔径最大最小NO.12 -32 4.70 4.826 4.6231/4 -32 5.60 5.690 5.486 5/16 -32 7.10 7.264 7.087 3/8 -32 8.70 8.865 8.661 7/16 -28 10.20 10.338 10.135 1/2 -28 11.80 11.938 11.709 9/16 -28 13.20 13.386 13.132 5/8 -24 14.80 14.986 14.732 3/4 -20 17.80 17.958 17.678 7/8 -20 21.00 21.133 20.853 1 -20 24.00 24.308 24.028 美制粗螺纹规格(UNC) 标准径2级牙钻孔径番数牙外径最大最小NO.1-64(1.854) 1.55 1.582 1.425 NO.2-56(2.184) 1.80 1.871 1.695 NO.3-48(2.515) 2.10 2.146 1.941 NO.4-40(2.845) 2.30 2.385 2.157 NO.5-40(3.175) 2.60 2.697 2.487 NO.6-32(3.505) 2.80 2.895 2.642 NO.8-32(4.166) 3.40 3.530 3.302 NO.10-24(4.826) 3.90 3.962 3.682 NO.12-24(5.846) 4.50 4.597 4.344 1/4 -20 5.10 5.257 4.979 5/16 -18 6.60 6.731 6.401 3/8 -16 8.00 8.153 7.987 7/16 -14 9.40 9.500 9.144 1/2 -13 10.80 11.023 10.592 9/16 -12 12.20 12.446 11.989 5/8 -11 13.60 12.868 13.386 3/4 -10 16.20 16.840 16.307 7/8 -9 19.50 19.761 19.177 1 -8 22.20 22.606 21.971 1-1/8 -7 25.00 25.349 24.638 1-1/4 -7 28.20 28.524 27.813 1-3/8 -6 30.80 31.115 30.353 1-1/2 -6 34.00 34.290 33.528 1-3/4 -5 39.50 39.827 38.9642 -4-1/2 45.20 45.593 44.679 英制螺纹规格钻孔径硬材软材W1/8 - 40 2.65 2.60W5/32 - 32 3.25 3.20W3/16 - 24 3.75 3.70W1/4 - 20 5.10 5.00W5/16 - 18 6.60 6.50W3/8 - 16 8.00 7.90W7/16 - 14 9.40 9.30W1/2 - 12 10.70 10.50W9/16 - 12 12.30 12.00W5/8 - 11 13.70 13.50W3/4 - 10 16.70 16.50W7/8 - 9 19.50 19.30W1 - 8 22.40 22.00W1-1/8 - 7 25.00 24.80W1-1/4 - 7 28.30 28.00英制管螺纹规格标准径钻孔径最大最小PS1/16 -28 6.50 6.632 6.490PS1/8 -28 8.50 8.637 8.495PS1/4 - 19 11.40 11.549 11.341PS3/8 - 19 15.00 15.054 14.846PS1/2 - 14 18.50 18.773 18.489PS3/4 - 14 24.00 24.259 23.975PS1 - 11 30.20 30.471 30.111PS1-1/4 -11 38.80 39.132 38.772PS1-1/2 -11 44.80 45.025 44.665PS2 - 11 56.50 56.836 56.476英制管螺纹规格标准径有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径使用绞刀时不用绞刀时PT1/16 -28 6.10 6.2 6.244 6.384 PT1/8 -28 8.10 8.2 8.249 8.388 PT1/4 -19 10.70 11 10.962 11.174 PT3/8 -19 14.20 14.5 14.448 14.658 PT1/2 -14 17.60 18 17.979 18.263 PT3/4 -14 23.00 23.5 23.378 23.663 Pt1 -11 29.00 29.5 29.459 29.822 PT1-1/4 -11 37.50 38 37.976 38.339 PT1-1/2 -11 43.40 44 43.869 44.232 Pt2 -11 54.90 55.5 55.412 55.844 美制螺纹滚造径规格钻孔径NPT NPS使用绞刀时不用绞刀时1/16 -27 6.1 6.25 6.351/8 -27 8.33 8.43 8.741/4 -18 10.72 11.13 11.133/8 -18 14.27 14.27 14.681/2 -14 17.48 17.86 18.263/4 -14 22.63 23.01 23.421 -11-1/2 28.58 28.98 29.361-1/4-11-1/2 37.31 37.69 38.11-1/2-11-1/2 43.66 44.04 44.452 -11-1/2 55.58 55.96 56.36英制螺纹滚造径规格滚造径W 3/16 - 24 4.08 - 4.05W 1/4 - 20 5.51 - 5.46W 5/16 - 18 7.01 - 6.95W 3/8 - 16 8.48 - 8.41W 7/16 - 14 9.92 - 9.85W 1/2 - 12 11.31 - 11.24W 9/16 -12 12.89 - 12.82公制螺纹规格滚造径M3.0×0.6 2.56 2.53M3.5×0.6 3.06 3.03M4.0×0.7 3.49 3.45M4.0×0.75 3.45 3.41M4.5×0.75 3.96 3.92M5.0×0.8 4.43 4.38M5.0×0.9 4.36 4.31M6.0×1.0 5.30 5.25M7.0×1.0 6.30 6.25M8.0×1.07.28 - 7.23M8.0×1.257.12 - 7.07M9.0×1.258.12 - 8.07M10×1.259.10 - 9.04M10×1.58.97 - 8.91M11×1.59.97 - 9.91M12×1.510.92 - 10.87 M12×1.7510.79 - 10.73 M14×2.012.63 - 12.56 M16×2.014.63 - 14.56 M18×2.516.31 - 16.23 M20×2.518.31 - 18.23 M22×2.520.31 - 20.23 针车用螺纹规格(UNC) 滚造径SM 1/8 40 2.735 -2.688 SM 1/8 44 2.769 -2.722 SM 9/64 40 3.128 -3.083 SM 11/64 40 3.855 -3.805 SM 3/16 32 4.205 -4.155 SM 3/16 28 4.143 -4.093 SM 7/32 32 5.003 -4.955 SM 15/64 28 5.325 -4.955 SM 1/4 40 5.890 -5.735 SM 1/4 28 5.721 -5.366 SM 9/32 28 6.528 -6.648 SM 11/32 28 8.092 -8.432 SM 3/8 29 8.880 -8.015 SM 7/16 30 10.466 -10.401 SM 7/16 16 10.037 -9.967SM 1/2 20 11.819 -11.749 SM 9/16 20 13.400 -13.425 美制粗螺纹规格(UNC) 滚造径NO.5-40 2.70 - 2.67 NO.6-32 2.95 - 2.91 NO.8-32 3.60 - 3.57 NO.10-24 4.09 - 4.05 NO.12-24 4.75 - 4.701/4 -20 5.50 - 5.455/16 -18 6.98 - 6.933/8 -16 8.45 - 8.407/16 -14 9.89 - 9.831/2 -13 11.39 - 11.32 9/16 -12 12.87 - 12.80 美制细螺纹规格(UNF) 滚造径NO.5-44 2.73 - 2.70 NO.6-40 3.05 - 3.02 NO.8-36 3.66 - 3.63 NO.10-32 4.26 - 4.80 NO.12-28 4.84 - 4.801/4 -28 5.72 - 5.685/16 -24 7.20 - 7.163/8 -24 8.79 - 8.747/16 -20 10.23 - 10.18 1/2 -20 11.82 - 11.76。
螺纹攻牙-钻孔直径对照表
M4.0*0.5 3.50 3.599 3.459 NO.3-56(2.515) 2.10 2.197 2.025
M4.5*0.5 4.00 4.099 3.959 NO.4-48(2.845) 2.40 2.458 2.271
M5.0*0.5 4.50 4.599 4.459 NO.5-44(3.175) 2.70 2.740 2.551
9.31 9.38
9.44
M12*1.75
11.04 11.12 11.21
M12*1.25
11.31 11.38 11.44
美制迫牙丝攻钻孔径
规格 NO. 2-56UNC
精度等级
G1-G6 G7-G8 G9
1.94
..
..
NO. 3-48
2.23
..
..
NO. 4-40
2.50
..
..
NO. 5-40
******本表 依据二级牙
螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 表.
公制粗螺 纹
公制细螺 纹
规格
标准径
二级牙钻孔径 最大 最小
规格
标准径
二级牙钻孔径 最大 最小
M1.0*0.25 0.75 0.785 0.729
M12*1.0
11.00 11.153 10.917
M1.1*0.25 0.85 0.885 0.829
M28*1.0
27.00 27.153 26.917
M24*3.0 21.00 21.252 20.752
M30*3.0
27.00 27.252 26.752
M27*3.0 24.00 24.252 23.752
M30*2.0
螺丝攻牙钻孔径和滚造径对照表
螺丝攻牙钻孔径和滚造径对照表螺丝攻牙钻孔径和滚造径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻规格（UN标准2级牙钻最大最小最大最小M1.0×0.25 0.70.70.7NO.1-1.51.5 1.4 M1.1×0.25 0.80.80.8NO.2-1.81.8 1.6 M1.2×0.25 0.90.90.9NO.3-2.12.1 1.9 M1.4×0.3 1.1 1.1 1.0NO.4-2.32.3 2.1 M1.6×0.35 1.2 1.3 1.2NO.5-2.62.6 2.4 M1.7×0.35 1.3 1.4 1.3NO.6-2.82.8 2.6 M1.8×0.35 1.4 1.5 1.4NO8- 3.43.5 3.3 M2.0×0.4 1.6 1.6 1.5NO.1 3.93.9 3.6 M2.2×0.45 1.7 1.8 1.7NO.1 4.54.5 4.3 M2.3×0.4 1.9 1.9 1.81/4- 5.15.2 4.9 M2.5×0.45 2.1 2.1 2.05/16-6.66.7 6.4 M2.6×0.45 2.2 2.2 2.13/8-8.08.17.7 M3.0×0.5 2.5 2.5 2.47/16-9.49.59.1 M3.0×0.6 2.4 2.4 2.21/2-10.11.10. M3.5×0.6 2.9 3.0 2.89/16-12.12.11. M4.0×0.7 3.3 3.4 3.25/8-13.12.13. M4.0×0.75 3.2 3.3 3.13/4-16.18.16. M4.5×0.75 3.8 3.8 3.67/8-9 19.19.19. M5.0×0.8 4.2 4.3 4.1 1 22.22.21. M5.0×0.9 4.1 4.1 3.91-25.25.24. M6.0×1.0 5.0 5.1 4.91-28.28.27. M7.0×1.0 6.0 6.1 5.91-30.31.30. M8.0×1.25 6.8 6.9 6.61-34.34.33. M9.0×1.25 7.87.97.61-39.39.38. M10×1.5 8.58.68.32-4-45.45.44. M11×1.5 9.59.69.3M12×1.75 10.10.10.M14×2.0 12.12.11.M16×2.0 14.14.13.M18×2.5 15.15.15.M20×2.5 17.17.17.M22×2.5 19.19.19.M24×3.0 21.21.20.M27×3.0 24.24.23.M30×3.5 26.26.26.M16丝孔钻14。