Metric screw threads ISO 724 (DIN 13 T1)
Nominal diameter d = D
Pitch P
root radius r
pitch diameter d2=D2
minor diameter d3 D1
thread height h3 H1
drill diameter mm
M 1.00
0.25
0.036
0.838
0.693
0.729
0.153
0.135
0.75
M 1.10
0.938
0.793
0.829
0.85
M 1.20
1.038
0.893
0.929
0.95
M 1.40
0.30
0.043
1.205
1.032
1.075
0.184
0.162
1.10
M 1.60
0.35
0.051
1.373
1.171
1.221
0.215
0.189
1.25
M 1.80
1.573
1.371
1.421
1.45
M 2.00
0.40
0.058
1.740
1.509
1.567
0.245
0.217
1.60
M 2.20
0.45
0.065
1.908
1.648
1.713
0.276
0.244
1.75
M 2.50
2.208
1.948
2.013
2.05
M 3.00
0.50
0.072
2.675
2.387
2.459
0.307
0.271
2.50
M 3.50
0.60
0.087
3.110
2.764
2.850
0.368
0.325
2.90
M 4.00
0.70
0.101
3.545
3.141
3.242
0.429
0.379
3.30
M 4.50
0.108
4.013
3.580
3.688
0.460
0.406
3.80
M 5.00
0.80
0.115
4.480
4.019
4.134
0.491
0.433
4.20
M 6.00
1.00
0.144
5.350
4.773
4.917
0.613
0.541
5.00
M 7.00
6.350
5.773
5.917
6.00
M 8.00
0.180
7.188
6.466
6.647
0.767
0.677
6.80
M 9.00
8.188
7.466
7.647
7.80
M 10.00
1.50
9.026
8.160
8.376
0.920
0.812
8.50
M 11.00
10.026
9.160
9.376
9.50
M 12.00
0.253
10.863
9.853
10.106
1.074
0.947
10.20
M 14.00
2.00
0.289
12.701
11.546
11.835
1.227
1.083
12.00
M 16.00
14.701
13.546
13.835
14.00
M 18.00
0.361
16.376
14.933
15.394
1.534
1.353
15.50
M 20.00
18.376
16.933
17.294
17.50
M 22.00
20.376
18.933
19.294
19.50
M 24.00
3.00
22.051
20.319
20.752
1.840
1.624
21.00
M 27.00
25.051
23.319
23.752
24.00
M 30.00
3.50
0.505
27.727
25.706
26.211
2.147
1.894
26.50
M 33.00
30.727
28.706
29.211
29.50
M 36.00
4.00
0.577
33.402
31.093
31.670
2.454
2.165
32.00
M 39.00
36.402
34.093
34.670
35.00
M 42.00
4.50
0.650
39.077
36.479
37.129
2.760
2.436
37.50
M 45.00
42.077
39.479
40.129
40.50
M 48.00
0.722
44.752
41.866
42.857
3.067
2.706
43.00
M 52.00
48.752
45.866
46.587
47.00
M 56.00
5.50
0.794
52.428
49.252
50.046
3.374
2.977
50.50
M 60.00
56.428
53.252
54.046
54.50
M 64.00
0.866
60.103
56.639
57.505
3.681
3.248
58.00
M 68.00
64.103
60.639
61.505
62.00
