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