Threads - Metric ISO 724
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Threads - Metric ISO 724 M Thread (metric ISO 724 thread) Standard in Europe
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The M Thread - ISO 724:1993 "ISO general-purpose metric screw threads -- Basic dimensions" (DIN 13), the standard in Europe, is recognizable by its cylindrical outer and inner diameter and its precise outer diameter in millimeters.
coarse fine extra fine The thread angle is 60 o. The thread depth is 0.614 x pitch.
Designation Metric threads are designated with a capital M plus an indication to their nominal outer diameter and their pitch: M size x pitch For instance: M10 x 1.5
Metric Threads - Coarse Thread Pitches Pitch1) (mm)
Clearance Drill (mm)
Tap Drill (mm)
M 1.60
0.35
1.8
1.25
M 2.00
0.40
2.4
1.60
M 2.50
0.45
2.90
2.00
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M 3.00
0.50
3.40
2.50
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M 3.50
0.60
3.90
2.90
M 4.00
0.70
4.50
3.30
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M 5.00
0.80
5.50
4.20
M 6.00
1.00
6.60
5.00
M 8.00
1.25
9.00
6.80
M 10.00
1.50
12.00
8.50
C
M 12.00
1.75
14.00
10.20
F
M 14.00
2.00
16.00
12.00
M 16.00
2.00
18.00
14.00
M 20.00
2.50
22.00
17.50
M 22.00
2.50
25.00
19.50
M 24.00
3.00
27.00
21.00
M 27.00
3.00
30.00
24.00
M 30.00
3.50
33.00
26.50
in
M 36.00
4.00
40.00
32.00
ft
M 42.00
4.50
46.00
37.50
yards
M 48.00
5.00
53.00
43.00
miles
M 56.00
5.50
62.00
50.50
M 64.00
6.00
70.00
58.00
M 68.00
6.00
74.00
62.00
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Temperature
o
Length
m km
nautical miles
Volume
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There are three kinds of ISO metric threads:
Size - Nominal Diameter (mm)
o
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1)
For metric threads pitch is the distance between threads.
1 mm ~= 0.03937 inches m
3
liters in
Metric Threads - Fine Thread Pitches
3
3
ft
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Threads - Metric ISO 724
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us gal
Velocity
m/s km/h
Size - Nominal Diameter (mm)
Pitch1) (mm)
Tap Drill (mm)
M 1.0x0.2
0.20
0.80
M 1.1x0.2
0.20
0.90
M 1.2x0.2
0.20
1.00
M 1.4z0.2
0.20
1.20 1.40
M 1.6x0.2
0.20
ft/s
M 1.8x0.2
0.20
1.60
mph
M 2x0.25
0.25
1.75
knots
M 2.2x0.25
0.25
1.95
M 2.5x0.35
0.35
2.10
M 3x0.35
0.35
2.60
M 3.5x0.35
0.35
3.10 3.50
ft/min
Pressure
2
Pa (N/m ) bar mm H 2O kg/cm
2
psi inches H2O
Flow
M 4x0.5
0.50
M 4.5x0.5
0.50
4.00
M 5x0.5
0.50
4.50
M 5.5x0.5
0.50
5.00
M 6x0.75
0.75
5.20
M 7x0.75
0.75
6.20
M 8x0.75
0.75
7.20
M 8x1.0
1.00
7.00
M 9x0.75
0.75
8.20
M 9x 1
1.00
8.00
M 10x0.75
0.75
9.20
m /s
3
M 10x1
1.00
9.00
m 3/h
M 10x1.25
1.25
8.80
US gpm
M 11x0.75
0.75
10.20
M 11x1
1.00
10.00
M 12x1
1.00
11.00
M 12x1.25
1.25
10.80
M 12x1.5
1.50
10.50
M 14x1.0
1.00
13.00
M 14x1.25
1.25
12.80
cfm
Unit Converter Scientific
Calculator
M 14x1.5
1.50
12.50
M 15x1
1.00
14.00
M 15x1.5
1.50
13.50
M 16x1
1.00
15.00
M 16x1.5
1.50
14.50
M 17x1.0
1.00
16.00
M 17x1.5
1.50
15.50
M 18x1.0
1.00
17.00
M 18x1.5
1.50
16.50
M 18x2.0
2.00
16.00
M 20x1.0
1.00
19.00
M 20x1.5
1.50
18.50
M 20x2.0
2.00
18.00
M 22x1.0
1.00
21.00
M 22x1.5
1.50
20.50
M 22x2.0
2.00
20.00
M 24x1.0
1.00
23.00
M 24x1.5
1.50
22.50
M 24x2.0
2.00
22.00
M 25x1.0
1.00
24.00
M 25x1.5
1.50
23.50
M 25x2.0
2.00
23.00
M 27x1.0
1.00
26.00
M 27x1.5
1.50
25.50
M 27x2.0
2.00
25.00
M 28x1.0
1.00
27.00
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M 28x1.5
1.50
26.50
M 28x2.0
2.00
26.00
M 30x1.0
1.00
29.00
M 30x1.5
1.50
28.50
M 30x2.0
2.00
28.00
M 30x3.0
3.00
27.00
M 32x1.5
1.50
30.50
M 32x2.0
2.00
30.00
M 33x1.5
1.50
31.50
M 33x2.0
2.00
31.00
M 33x3.0
3.00
30.00
M 35x1.5
1.50
33.50
M 35x2.0
2.00
33.00
M 36x1.5
1.50
34.50
M 36x2.0
2.00
34.00
M 36x3.0
3.00
33.00
M 39x1.5
1.50
37.50
M 39x2.0
2.00
37.00
M 39x3.0
3.00
36.00
M 40x1.5
1.50
38.50
M 40x2.0
2.00
38.00
M 40x3.0
3.00
37.00
M 42x1.5
1.50
40.50
M 42x2.0
2.00
40.00
M 42x3.0
3.00
39.00
M 42x4.0
4.00
38.00
M 45x1.5
1.50
43.50
M 45x2.0
2.00
43.00
M 45x3.0
3.00
42.00
M 45x4.0
4.00
41.00
M 48x1.5
1.50
46.50
M 48x2.0
2.00
46.00
M 48x3.0
3.00
45.00
M 48x4.0
4.00
44.00
M 50x1.5
1.50
48.50
M 50x2.0
2.00
48.00
M 50x3.0
3.00
47.00
M 52x1.5
1.50
50.50
M 52x2.0
2.00
50.00
M 52x3.0
3.00
49.00
M 52x4.0
4.00
48.00
M 55x1.5
1.50
53.50
M 55x2.0
2.00
53.00
M 55x3.0
3.00
52.00
M 55x4.0
4.00
51.00
M 56x1.5
1.50
54.50
M 56x2.0
2.00
54.00
M 56x3.0
3.00
53.00
M 56x4.0
4.00
52.00
M 58x1.5
1.50
56.50
M 58x2.0
2.00
56.00
M 58x3.0
3.00
55.00
M 58x4.0
4.00
54.00
M 60x1.5
1.50
58.50
M 60x2.0
2.00
58.00
M 60x3.0
3.00
57.00
M 60x4.0
4.00
56.00
M 62x1.5
1.50
60.50
M 62x2.0
2.00
60.00
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M 62x3.0
3.00
59.00
M 62x4.0
4.00
58.00
M 64x1.5
1.50
62.50
M 64x2.0
2.00
62.00
M 64x3.0
3.00
61.00
M 64x4.0
4.00
60.00
M 65x1.5
1.50
63.50
M 65x2.0
2.00
63.00
M 65x3.0
3.00
62.00
M 65x4.0
4.00
61.00
M 68x1.5
1.50
66.50
M 68x2.0
2.00
66.00
M 68x3.0
3.00
65.00
M 68x4.0
4.00
64.00
M 70x1.5
1.50
68.50
M 70x2.0
2.00
68.00
M 70x3.0
3.00
67.00
M 70x4.0
4.00
66.00
M 70x6.0
6.00
64.00
M 72x1.5
1.50
70.50
M 72x2.0
2.00
70.00
M 72x3.0
3.00
69.00
M 72x4.0
4.00
68.00
M 72x6.0
6.00
66.00
M 75x1.5
1.50
73.50
M 75x2.0
2.00
73.00
M 75x3.0
3.00
72.00
M 75x4.0
4.00
71.00
M 75x6.0
6.00
69.00
M 76x1.5
1.50
74.50
M 76x2.0
2.00
74.00
M 76x3.0
3.00
73.00
M 76x4.0
4.00
72.00
M 76x6.0
6.00
70.00
M 80x1.5
1.50
78.50
M 80x2.0
2.00
78.00
M 80x3.0
3.00
77.00
M 80x4.0
4.00
76.00
M 80x6.0
6.00
74.00
M 85x2.0
2.00
83.00
M 85x3.0
3.00
82.00
M 85x4.0
4.00
81.00
M 85x6.0
6.00
79.00
M 90x2.0
2.00
88.00
M 90x3.0
3.00
87.00
M 90x4.0
4.00
86.00
M 90x6.0
6.00
84.00
M 95x2.0
2.00
93.00
M 95x3.0
3.00
92.00
M 95x4.0
4.00
91.00
M 95x6.0
6.00
89.00
M 100x2.0
2.00
98.00
M 100x3.0
3.00
97.00
M 100x4.0
4.00
96.00
M 100x6.0
6.00
94.00
Related ISO Standards ISO 68:1973 ISO general purpose screw threads - Basic profile ISO 261:1973 ISO general purpose metric screw threads - General plan ISO 262:1973 ISO general purpose metric screw threads - Selected sizes for screws, bolts and nuts
10/18/2010 1:54 PM
Threads - Metric ISO 724
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ISO 724:1993 ISO general-purpose metric screw threads - Basic dimensions ISO 965-1:1980 ISO general purpose metric screw threads - Tolerances - Part 1: Principles and basic data ISO 965-2:1980 ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose bolt and nut threads - Medium quality ISO 965-3:1980 ISO general purpose metric screw threads - Tolerances - Part 3: Deviations for constructional threads ISO 1502:1996 ISO general-purpose metric screw threads - Gauges and gauging Sponsored Links
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