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範圍
本标準依據GB/T 192-2003和GB/T 193-2003規定了普通螺紋（一般用途米制螺紋）的基本尺寸。适用于一般用途的機械緊固螺紋聯接，其螺紋本身不具有密封功能。 -
基本尺寸
單位：mm
公稱直徑（大徑）
D、d
螺距
P
中徑
D2、d2
小徑
D1、d1
1
0.25
0.838
0.729
0.2
0.87
0.783
1.1
0.25
0.938
0.829
0.2
0.97
0.883
1.2
0.25
1.038
0.929
0.2
1.07
0.983
1.4
0.3
1.205
1.075
0.2
1.27
1.183
1.6
0.35
1.373
1.221
0.2
1.47
1.383
1.8
0.35
1.573
1.421
0.2
1.67
1.583
2
0.4
1.74
1.567
0.25
1.838
1.729
2.2
0.45
1.908
1.713
0.25
2.038
1.929
2.5
0.45
2.208
2.013
0.35
2.273
2.121
3
0.5
2.675
2.459
0.35
2.773
2.621
3.5
0.6
3.11
2.85
0.35
3.273
3.121
4
0.7
3.545
3.242
0.5
3.675
3.459
4.5
0.75
4.013
3.688
0.5
4.175
3.959
5
0.8
4.48
4.134
0.5
4.675
4.459
5.5
0.5
5.175
4.959
6
1
5.35
4.917
0.75
5.513
5.188
7
1
6.35
5.917
0.75
6.513
6.188
8
1.25
7.188
6.647
1
7.35
6.917
0.75
7.513
7.188
9
1.25
8.188
7.647
1
8.35
7.917
0.75
8.513
8.188
10
1.5
9.026
8.376
1.25
9.188
8.647
1
9.35
8.917
0.75
9.513
9.188
11
1.5
10.026
9.376
1
10.35
9.917
0.75
10.513
10.188
12
1.75
10.863
10.106
1.5
11.026
10.376
1.25
11.188
10.647
1
11.35
10.917
14
2
12.701
11.835
1.5
13.026
12.376
1.25
13.188
12.647
1
13.35
12.917
15
1.5
14.026
13.376
1
14.35
13.917
16
2
14.701
13.835
1.5
15.026
14.376
1
15.35
14.917
17
1.5
16.026
15.376
1
16.35
15.917
18
2.5
16.376
15.294
2
16.701
15.835
1.5
17.026
16.376
1
17.35
16.917
20
2.5
18.376
17.294
2
18.701
17.835
1.5
19.026
18.376
1
19.35
18.917
22
2.5
20.376
19.294
2
20.701
19.835
1.5
21.026
20.376
1
21.35
20.917
24
3
22.051
20.752
2
22.701
21.835
1.5
23.026
22.376
1
23.35
22.917
25
2
23.701
22.835
1.5
24.026
23.376
1
24.35
23.917
26
1.5
25.026
24.376
27
3
25.051
23.752
2
25.701
24.835
1.5
26.026
25.376
1
26.35
25.917
28
2
26.701
25.835
1.5
27.026
26.376
1
27.35
26.917
30
3.5
27.727
26.211
3
28.051
26.752
2
28.701
27.835
1.5
29.026
28.376
1
29.35
28.917
32
2
30.701
29.835
1.5
31.026
30.376
33
3.5
30.727
29.211
3
31.051
29.752
2
31.701
30.835
1.5
32.026
31.376
35
1.5
34.026
33.376
36
4
33.402
31.67
3
34.051
32.752
2
34.701
33.835
1.5
35.026
34.376
38
1.5
37.026
36.376
39
4
36.402
34.67
3
37.051
35.752
2
37.701
36.835
1.5
38.026
37.376
40
3
38.051
36.752
2
38.701
37.835
1.5
39.026
38.376
42
4.5
39.077
37.129
4
39.402
37.67
3
40.051
38.752
2
40.701
39.835
1.5
41.026
40.376
45
4.5
42.077
40.129
4
42.402
40.67
3
43.051
41.752
2
43.701
42.835
1.5
44.026
43.376
48
5
44.752
42.587
4
45.402
43.67
3
46.051
44.752
2
46.701
45.835
1.5
47.026
46.375
50
3
48.051
46.752
2
48.701
47.835
1.5
49.026
48.376
52
5
48.752
46.587
4
49.402
47.67
3
50.051
48.752
2
50.701
49.835
1.5
51.026
50.376
55
4
52.402
50.67
3
53.051
51.752
2
53.701
52.835
1.5
54.026
53.376
56
5.5
52.428
50.046
4
53.402
51.67
3
54.051
52.752
2
54.701
53.835
1.5
55.026
54.376
58
4
55.402
53.67
3
56.051
54.752
2
56.701
55.835
1.5
57.026
56.376
60
5.5
56.428
54.046
4
57.402
55.67
3
58.051
56.752
2
58.701
57.835
1.5
59.026
58.376
62
4
59.402
57.67
3
60.051
58.752
2
60.701
59.835
1.5
61.026
60.376
64
6
60.103
57.505
4
61.402
59.67
3
62.051
60.752
2
62.701
61.835
1.5
63.026
62.376
65
4
62.402
60.67
3
63.051
61.752
2
63.701
62.835
1.5
64.026
63.376
68
6
64.103
61.505
4
65.402
63.67
3
66.051
64.752
2
66.701
65.835
1.5
67.026
66.376
70
6
66.103
63.505
4
67.402
65.67
3
68.051
66.752
2
68.701
67.835
1.5
69.026
68.376
72
6
68.103
65.505
4
69.402
67.67
3
70.051
68.752
2
70.701
69.835
1.5
71.026
70.376
75
4
72.402
70.67
3
73.051
71.752
2
73.701
72.835
1.5
74.026
73.376
76
6
72.103
69.505
4
73.402
71.67
3
74.051
72.752
2
74.701
73.835
1.5
75.026
74.376
78
2
76.7
75.835
80
6
76.103
73.505
4
77.402
75.67
3
78.051
76.752
2
78.701
77.835
1.5
79.026
78.376
82
2
80.701
79.835
85
6
81.103
78.505
4
82.402
80.67
3
83.051
81.752
2
83.701
82.835
90
6
86.103
83.505
4
87.402
85.67
3
88.051
86.752
2
88.701
87.835
95
6
91.103
88.505
4
92.402
90.67
3
93.051
91.752
2
93.701
92.835
100
6
96.103
93.505
4
97.402
95.67
3
98.051
96.752
2
98.701
97.835
105
6
101.103
98.505
4
102.402
100.67
3
103.051
101.752
2
103.701
102.835
110
6
106.103
103.505
4
107.402
105.67
3
108.051
106.752
2
108.701
107.835
115
6
111.103
108.505
4
112.402
110.67
3
113.051
111.752
2
113.701
112.835
120
6
116.103
113.505
4
117.402
115.67
3
118.051
116.752
2
118.701
117.835
125
6
121.103
118.505
4
122.402
120.67
3
123.051
121.752
2
123.701
122.835
130
6
126.103
123.505
4
127.402
125.67
3
128.051
126.752
2
128.701
127.835
135
6
131.103
128.505
4
132.402
130.67
3
133.051
131.752
2
133.701
132.835
140
6
136.103
133.505
4
137.402
135.67
3
138.051
136.752
2
138.701
137.835
145
6
141.103
138.505
4
142.402
140.67
3
143.051
141.752
2
143.701
142.835
150
8
144.804
141.34
6
146.103
143.505
4
147.402
145.67
3
148.051
146.752
2
148.701
147.835
155
6
151.103
148.505
4
152.402
150.67
3
153.051
151.752
160
8
154.804
151.34
6
156.103
153.505
4
157.402
155.67
3
158.051
156.752
165
6
161.103
158.505
4
162.402
160.67
3
163.051
161.752
170
8
164.804
161.34
6
166.103
163.505
4
167.402
165.67
3
168.051
166.752
175
6
171.103
168.505
4
172.402
170.67
3
173.051
171.752
180
8
174.804
171.34
6
176.103
173.505
4
177.402
175.67
3
178.051
176.752
185
6
181.103
178.505
4
182.402
180.67
3
183.051
181.752
190
8
184.804
181.34
6
186.103
183.505
4
187.402
185.67
3
188.051
186.752
195
6
191.103
188.505
4
192.402
190.67
3
193.051
191.752
200
8
194.804
191.34
6
196.103
193.505
4
197.402
195.67
3
198.051
196.752
205
6
201.103
198.505
4
202.402
200.67
3
203.051
201.752
210
8
204.804
201.34
6
206.103
203.505
4
207.402
205.67
3
208.051
206.752
215
6
211.103
208.505
4
212.402
210.67
3
213.051
211.752
220
8
214.804
211.34
6
216.103
213.505
4
217.402
215.67
3
218.051
216.752
225
6
221.103
218.505
4
222.402
220.67
3
223.051
221.752
230
8
224.804
221.34
6
226.103
223.505
4
227.402
225.67
3
228.051
226.752
235
6
231.103
228.505
4
232.402
230.67
3
233.051
231.752
240
8
234.804
231.34
6
236.103
233.505
4
237.402
235.67
3
238.051
236.752
245
6
241.103
238.505
4
242.402
240.67
3
243.051
241.752
250
8
244.804
241.34
6
246.103
243.505
4
247.402
245.67
3
248.051
246.752
255
6
251.103
248.505
4
252.402
250.67
260
8
254.804
251.34
6
256.103
253.505
4
257.402
255.67
265
6
261.103
258.505
4
262.402
260.67
270
8
264.804
261.34
6
266.103
263.505
4
267.402
265.67
275
6
271.103
268.505
4
272.402
270.67
280
8
274.804
271.34
6
276.103
273.505
4
277.402
275.67
285
6
281.103
278.505
4
282.402
280.67
290
8
284.804
281.34
6
286.103
283.505
4
287.402
285.67
295
6
291.103
288.505
4
292.402
290.67
300
8
294.804
291.34
6
296.103
293.505
4
297.402
295.67
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