Dimensions mm · values as the standard states them Series 1 Series 2 Series 3
Size P d d d s e m f f f mass u v M4 0.7 3.5
—
—
7
h13
≈ 8.1
2.5
0.3
—
—
0.17
≥ 2.5
≥ 5.7
M5 0.8 4.5
—
—
8
h13
≈ 9.2
2.5
0.4
—
—
0.28
≥ 2.5
≥ 6.5
M6 1 5.3
—
—
10
h13
≈ 11.5
3
0.4
—
—
0.4
≥ 3
≥ 8
M8 1.25 6.9
7.1
—
13
h13
≈ 15
3.5
0.5
0.4
—
0.7
≥ 3.5
≥ 10
M10 1.5 8.6
9
9.3
17
h13
≈ 19.5
4
0.5
0.5
0.5
1.4
≥ 4
≥ 12
M12 1.75 10.4
10.7
11
19
h13
≈ 21.9
4.5
0.6
0.6
0.6
1.9
≥ 4.5
≥ 14.5
M14 2 12
12.7
—
22
h13
≈ 25.4
5
0.6
0.6
—
2.5
≥ 5
≥ 16
M16 2 14.1
14.8
—
24
h13
≈ 27.7
5
0.7
0.7
—
3.4
≥ 5
≥ 18
M18 2.5 15.5
16.2
16.8
27
h13
≈ 31.2
5.5
0.7
0.7
0.7
4.1
≥ 5.5
≥ 20.5
M20 2.5 17.6
18.3
18.8
30
h13
≈ 34.6
6
0.8
0.8
0.7
5.1
≥ 6
≥ 22
M22 2.5 19.6
20.3
20.8
32
h13
≈ 36.9
6
0.8
0.8
0.7
5.6
≥ 6
≥ 24
M24 3 21
22.5
22.8
36
h13
≈ 41.6
7
0.9
0.9
0.7
7.4
≥ 7
≥ 26
M27 3 24.2
25.5
—
41
h13
≈ 47.3
7
1
1
—
13
≥ 7
≥ 29
M30 3.5 26.6
28.5
—
46
h13
≈ 53.1
8
1.1
1
—
16
≥ 8
≥ 32
M33 3.5 29.8
31.5
—
50
h13
≈ 57.7
8
1.2
1
—
18.5
≥ 8
≥ 34
M36 4 32.2
33.6
—
55
h13
≈ 63.5
9
1.3
1.3
—
29
≥ 9
≥ 38
M39 4 35.2
36.6
—
60
h13
≈ 69.3
9
1.3
1.3
—
32
≥ 9
≥ 40
M42 4.5 37.6
39.8
—
65
h13
≈ 75
11
1.4
1.4
—
45
≥ 11
≥ 45
M45 4.5 40.9
42.8
—
70
h13
≈ 80.8
12
1.5
1.5
—
64
≥ 12
≥ 48
M48 5 43.9
45.8
—
75
h13
≈ 86.5
14
1.6
1.5
—
75
≥ 14
≥ 52
M52 5 48.2
49.8
—
80
h13
≈ 92.4
16
1.7
1.5
—
80
≥ 16
≥ 58
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.
Size sheet · DIN 7967
M4
d the nominal diameter of the thread 3.5
s width across flats 7
e width across corners ≈ 8.1
m height of the nut 2.5
f 0.3
mass mass per 1000 pieces (kg) 0.17
u ≥ 2.5
v ≥ 5.7 Thread · ISO 261/262
Pitch P 0.7
d2 3.545
d3 3.141
Tap drill 3.3
Stress area As 8.78 mm² Size sheet · DIN 7967
M5
d the nominal diameter of the thread 4.5
s width across flats 8
e width across corners ≈ 9.2
m height of the nut 2.5
f 0.4
mass mass per 1000 pieces (kg) 0.28
u ≥ 2.5
v ≥ 6.5 Thread · ISO 261/262
Pitch P 0.8
d2 4.48
d3 4.019
Tap drill 4.2
Stress area As 14.18 mm² Size sheet · DIN 7967
M6
d the nominal diameter of the thread 5.3
s width across flats 10
e width across corners ≈ 11.5
m height of the nut 3
f 0.4
mass mass per 1000 pieces (kg) 0.4
u ≥ 3
v ≥ 8 Thread · ISO 261/262
Pitch P 1
d2 5.35
d3 4.773
Tap drill 5
Stress area As 20.12 mm² Size sheet · DIN 7967
M8
d the nominal diameter of the thread 6.9
d the nominal diameter of the thread 7.1
s width across flats 13
e width across corners ≈ 15
m height of the nut 3.5
f 0.5
f 0.4
mass mass per 1000 pieces (kg) 0.7
u ≥ 3.5
v ≥ 10 Thread · ISO 261/262
Pitch P 1
d2 7.35
d3 6.773
Tap drill 7
Stress area As 39.17 mm² Size sheet · DIN 7967
M10
d the nominal diameter of the thread 8.6
d the nominal diameter of the thread 9
d the nominal diameter of the thread 9.3
s width across flats 17
e width across corners ≈ 19.5
m height of the nut 4
f 0.5
f 0.5
f 0.5
mass mass per 1000 pieces (kg) 1.4
u ≥ 4
v ≥ 12 Thread · ISO 261/262
Pitch P 1
d2 9.35
d3 8.773
Tap drill 9
Stress area As 64.49 mm² Size sheet · DIN 7967
M12
d the nominal diameter of the thread 10.4
d the nominal diameter of the thread 10.7
d the nominal diameter of the thread 11
s width across flats 19
e width across corners ≈ 21.9
m height of the nut 4.5
f 0.6
f 0.6
f 0.6
mass mass per 1000 pieces (kg) 1.9
u ≥ 4.5
v ≥ 14.5 Thread · ISO 261/262
Pitch P 1.25
d2 11.188
d3 10.466
Tap drill 10.75
Stress area As 92.07 mm² Size sheet · DIN 7967
M14
d the nominal diameter of the thread 12
d the nominal diameter of the thread 12.7
s width across flats 22
e width across corners ≈ 25.4
m height of the nut 5
f 0.6
f 0.6
mass mass per 1000 pieces (kg) 2.5
u ≥ 5
v ≥ 16 Thread · ISO 261/262
Pitch P 1.5
d2 13.026
d3 12.16
Tap drill 12.5
Stress area As 124.55 mm² Size sheet · DIN 7967
M16
d the nominal diameter of the thread 14.1
d the nominal diameter of the thread 14.8
s width across flats 24
e width across corners ≈ 27.7
m height of the nut 5
f 0.7
f 0.7
mass mass per 1000 pieces (kg) 3.4
u ≥ 5
v ≥ 18 Size sheet · DIN 7967
M18
d the nominal diameter of the thread 15.5
d the nominal diameter of the thread 16.2
d the nominal diameter of the thread 16.8
s width across flats 27
e width across corners ≈ 31.2
m height of the nut 5.5
f 0.7
f 0.7
f 0.7
mass mass per 1000 pieces (kg) 4.1
u ≥ 5.5
v ≥ 20.5 Thread · ISO 261/262
Pitch P 1.5
d2 17.026
d3 16.16
Tap drill 16.5
Stress area As 216.23 mm² Size sheet · DIN 7967
M20
d the nominal diameter of the thread 17.6
d the nominal diameter of the thread 18.3
d the nominal diameter of the thread 18.8
s width across flats 30
e width across corners ≈ 34.6
m height of the nut 6
f 0.8
f 0.8
f 0.7
mass mass per 1000 pieces (kg) 5.1
u ≥ 6
v ≥ 22 Thread · ISO 261/262
Pitch P 1.5
d2 19.026
d3 18.16
Tap drill 18.5
Stress area As 271.5 mm² Size sheet · DIN 7967
M22
d the nominal diameter of the thread 19.6
d the nominal diameter of the thread 20.3
d the nominal diameter of the thread 20.8
s width across flats 32
e width across corners ≈ 36.9
m height of the nut 6
f 0.8
f 0.8
f 0.7
mass mass per 1000 pieces (kg) 5.6
u ≥ 6
v ≥ 24 Thread · ISO 261/262
Pitch P 1.5
d2 21.026
d3 20.16
Tap drill 20.5
Stress area As 333.06 mm² Size sheet · DIN 7967
M24
d the nominal diameter of the thread 21
d the nominal diameter of the thread 22.5
d the nominal diameter of the thread 22.8
s width across flats 36
e width across corners ≈ 41.6
m height of the nut 7
f 0.9
f 0.9
f 0.7
mass mass per 1000 pieces (kg) 7.4
u ≥ 7
v ≥ 26 Size sheet · DIN 7967
M27
d the nominal diameter of the thread 24.2
d the nominal diameter of the thread 25.5
s width across flats 41
e width across corners ≈ 47.3
m height of the nut 7
f 1
f 1
mass mass per 1000 pieces (kg) 13
u ≥ 7
v ≥ 29 Thread · ISO 261/262
Pitch P 2
d2 25.701
d3 24.546
Tap drill 25
Stress area As 495.74 mm² Size sheet · DIN 7967
M30
d the nominal diameter of the thread 26.6
d the nominal diameter of the thread 28.5
s width across flats 46
e width across corners ≈ 53.1
m height of the nut 8
f 1.1
f 1
mass mass per 1000 pieces (kg) 16
u ≥ 8
v ≥ 32 Thread · ISO 261/262
Pitch P 2
d2 28.701
d3 27.546
Tap drill 28
Stress area As 621.2 mm² Size sheet · DIN 7967
M33
d the nominal diameter of the thread 29.8
d the nominal diameter of the thread 31.5
s width across flats 50
e width across corners ≈ 57.7
m height of the nut 8
f 1.2
f 1
mass mass per 1000 pieces (kg) 18.5
u ≥ 8
v ≥ 34 Thread · ISO 261/262
Pitch P 2
d2 31.701
d3 30.546
Tap drill 31
Stress area As 760.8 mm² Size sheet · DIN 7967
M36
d the nominal diameter of the thread 32.2
d the nominal diameter of the thread 33.6
s width across flats 55
e width across corners ≈ 63.5
m height of the nut 9
f 1.3
f 1.3
mass mass per 1000 pieces (kg) 29
u ≥ 9
v ≥ 38 Size sheet · DIN 7967
M39
d the nominal diameter of the thread 35.2
d the nominal diameter of the thread 36.6
s width across flats 60
e width across corners ≈ 69.3
m height of the nut 9
f 1.3
f 1.3
mass mass per 1000 pieces (kg) 32
u ≥ 9
v ≥ 40 Size sheet · DIN 7967
M42
d the nominal diameter of the thread 37.6
d the nominal diameter of the thread 39.8
s width across flats 65
e width across corners ≈ 75
m height of the nut 11
f 1.4
f 1.4
mass mass per 1000 pieces (kg) 45
u ≥ 11
v ≥ 45 Size sheet · DIN 7967
M45
d the nominal diameter of the thread 40.9
d the nominal diameter of the thread 42.8
s width across flats 70
e width across corners ≈ 80.8
m height of the nut 12
f 1.5
f 1.5
mass mass per 1000 pieces (kg) 64
u ≥ 12
v ≥ 48 Size sheet · DIN 7967
M48
d the nominal diameter of the thread 43.9
d the nominal diameter of the thread 45.8
s width across flats 75
e width across corners ≈ 86.5
m height of the nut 14
f 1.6
f 1.5
mass mass per 1000 pieces (kg) 75
u ≥ 14
v ≥ 52 Size sheet · DIN 7967
M52
d the nominal diameter of the thread 48.2
d the nominal diameter of the thread 49.8
s width across flats 80
e width across corners ≈ 92.4
m height of the nut 16
f 1.7
f 1.5
mass mass per 1000 pieces (kg) 80
u ≥ 16
v ≥ 58 Provenance
Draft — values taken from a single source and not yet cross-checked.
fasteners.eu dimensions, lengths, materials, property classes, current norm, equivalent norms Accessed 2026-09-23 · For design and safety-critical use, consult the current edition of the standard.
Data notes (1) Status (active/withdrawn) could not be confirmed from the sources used.