管螺纹与普通螺纹攻牙孔径对照表

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
第一系列1
1.2
1.6
2
2.53
4
5
第二系列 1.1
1.4
1.8
2.2
3.5
4.5
第三系列
5.5
0.20.800.90 1.00 1.20
1.40
1.60
0.250.75
0.85
0.95
1.75
1.95
0.3
1.100.35 1.25
1.45
2.15
2.15
2.65
0.4 1.60
0.45 1.75
2.05
0.5 2.50
3.50
4.00
4.50
5.00
0.6(2.90)
0.7 3.30
0.75(3.70)
0.8 4.20
11.251.51.7522.533.544.555.568
公称直径
注:
1、螺距最大的为粗牙螺距，其余螺距均为细牙螺距；
2、直径优先选用第一系列，其次第二系列，第三系列尽可能不用；
3、括号内的底孔直径对应的螺距尽可能不用；
4、M14x1.25仅用于火花塞，M35x1.5仅用于滚动轴承锁紧螺母；
5、对直径150~400的螺纹，需要使用螺距大于6mm的螺纹时，应优先选用8mm的螺距。

下列螺距的钻头直径
尽可能不用
粗牙螺距
细牙螺距
第一系列第三系列
第二系列普通螺纹参数表
第一系列6
8
10
12
16
20
24
第二系列7
14
18
22
第三系列
9
11
15
17
0.20.250.3
0.350.40.450.50.60.70.75 5.20
6.20
7.20
8.20
9.20
10.20
0.81 5.00
6.00
7.008.009.0010.00
11.0013.00(14.00)15.00
(16.00)17.00
19.00
21.00
23.00
1.25 6.80
(7.80)
8.8010.80
(12.80)1.58.50
(9.50)10.50
12.50
13.50
14.50
15.50
16.50
18.50
20.50
22.50
1.7510.20
212.00
14.00
16.0018.0020.0022.00
2.515.50
17.50
19.50
321.003.544.555.568
公称直径
下列螺距的钻头直径
第一系列30
36
42
48
第二系列27
33
39
45
第三系列
25
26
28
32
35
38
40
0.20.250.3
0.350.40.450.50.60.70.750.81(24.00)
26.00
27.00
29.00
1.251.523.50
24.50
25.50
26.50
28.50
30.50
31.50
33.50
34.50
36.50
37.50
38.50
40.50
43.50
46.50
1.75223.00
25.00
26.00
28.00
30.00
31.00
34.00
37.00
(38.00)40.00
43.00
46.00
2.5324.00
(27.00)(30.00)33.00
36.00
(37.00)39.00
42.00
45.00
3.526.50
29.50
432.00
35.00
(38.00)(41.00)(44.00)4.537.50
40.50
543.00
5.568
下列螺距的钻头直径
公称直径
第一系列56
64
72
第二系列52
60
68
76
第三系列
50
55
58
62
65
70
75
78
0.20.250.3
0.350.40.450.50.60.70.750.811.251.548.50
50.50
53.50
54.50
56.50
58.50
60.50
62.50
63.50
66.50
68.50
70.50
73.50
74.50
1.752(48.00)50.00
53.00
54.00
56.00
58.00
60.00
62.00
63.00
66.00
68.00
70.00
73.00
74.00
76.00
2.53(47.00)49.00
(52.00)53.00
(55.00)57.00
(59.00)61.00
(62.00)65.00
(67.00)69.00
(72.00)73.00
3.54(48.00)(51.00)52.00
(54.00)56.00
(58.00)60.00
(61.00)64.00
(66.00)68.00
(71.00)72.00
4.5547.00
5.550.50
(54.50)
658.00
62.00
(64.00)66.00
70.00
8
下列螺距的钻头直径
公称直径
第一系列80
90
100
110
125
140
第二系列85
95
105
115
120
130
第三系列
82
135
145
0.20.250.3
0.350.40.450.50.60.70.750.811.251.578.501.75278.0080.00
83.0088.0093.0098.00103.00108.00113.00118.00123.00128.00133.00138.00143.002.5377.0082.0087.0092.0097.00102.00107.00112.00117.00122.00127.00132.00137.00142.003.5476.00
81.00
86.00
91.00
96.00
101.00106.00111.00116.00121.00126.00131.00136.00141.00
4.55
5.5674.00
79.00
84.00
89.00
94.00
99.00
104.00109.00114.00119.00124.00129.00134.00139.00
8
下列螺距的钻头直径
公称直径
第一系列160
180
200
220
第二系列150
170
190
210
第三系列
155
165
175
185
195
205
215
0.20.250.3
0.350.40.450.50.60.70.750.811.251.51.752148.00
2.53147.00152.00157.00162.00167.00172.00177.00182.00187.00192.00197.00202.00207.00212.00217.00
3.54146.00151.00156.00161.00166.00171.00176.00181.00186.00191.00196.00201.00206.00211.00216.00
4.55
5.56144.00149.00154.00159.00164.00169.00174.00179.00184.00189.00194.00199.00204.00209.00214.008
142.00
152.00
162.00
172.00
182.00
192.00
202.00
212.00
公称直径
下列螺距的钻头直径
第一系列250
280
第二系列240
260
第三系列
225
230
235
245
255
265
270
275
285
290
295
0.20.250.3
0.350.40.450.50.60.70.750.811.251.51.7522.53222.00227.00232.00237.00242.00247.00
3.54221.00226.00231.00236.00241.00246.00251.00256.00261.00266.00271.00276.00281.00286.00291.00
4.55
5.56219.00224.00229.00234.00239.00244.00249.00254.00259.00264.00269.00274.00279.00284.00289.00
8
222.00
232.00
242.00
252.00
262.00
272.00
282.00
公称直径
下列螺距的钻头直径
第一系列320
360
400
第二系列300
340
380
420
440
第三系列
310
330
350
370
390
410
430
0.20.250.3
0.350.40.450.50.60.70.750.811.251.51.7522.533.54296.00306.00316.00326.00336.00346.00356.00366.00376.00386.00396.00
4.55
5.56294.00304.00314.00324.00334.00344.00354.00364.00374.00384.00394.00404.00414.00424.00434.008
292.00
公称直径
下列螺距的钻头直径
第一系列450
500
550
第二系列460
480
520
540
560
580
第三系列
470
490
510
530
570
590
0.20.250.3
0.350.40.450.50.60.70.750.811.251.51.7522.533.544.555.56444.00454.00464.00474.00484.00494.00504.00514.00524.00534.00544.00554.00564.00574.00584.00
8
下列螺距的钻头直径
公称直径
第一系列600第二系列
第三系列0.20.250.30.350.40.450.50.60.70.750.811.251.51.7522.533.544.55
5.56594.008公称直径下列螺距的钻头直径注:1、螺距最大的为粗牙螺距，其余螺距均为细牙螺距；2、直径优先选用第一系列，其次第二系列，第三系列尽可能不用；3、括号内的底孔直径对应的螺距尽可能不用；4、M14x1.25仅用于火花塞，M35x1.5仅用于滚动轴承锁紧螺母；5、对直径150~400的螺纹，需要使用螺距大于6mm的螺纹时，应优先选用8mm的螺距。

第一系列第二系列第三系列粗牙螺距细牙螺距尽可能不用。