Dimensions mm · values as the standard states them Size P e m h r d2 d3 g M4 0.7 19 – 21
3.2 – 4.6
9 – 11
Edgesrounded(radiusleftunspecified)
7 – 9
5.5 – 7
≥ 1.1
M5 0.8 24.5 – 26.5
4 – 6
11 – 13
Edgesrounded(radiusleftunspecified)
9 – 12
7.5 – 9
≥ 1.5
M6 1 29 – 32
5 – 7
14 – 16
Edgesrounded(radiusleftunspecified)
11 – 14
9 – 11
≥ 1.5
M8 1.25 35 – 38
6.5 – 8.5
17 – 19
Edgesrounded(radiusleftunspecified)
13 – 16
10.5 – 12.5
≥ 2
M10 1.5 47 – 50
8 – 10
22 – 24
Edgesrounded(radiusleftunspecified)
18 – 21
14 – 16
≥ 3.6
M12 1.75 63 – 66
10 – 13
29 – 32
Edgesrounded(radiusleftunspecified)
21 – 24
17 – 19
≥ 4.1
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 314
M4
e width across corners 19 – 21
m nut height 3.2 – 4.6
h 9 – 11
r Edgesrounded(radiusleftunspecified)
d2 7 – 9
d3 5.5 – 7
g ≥ 1.1 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 314
M5
e width across corners 24.5 – 26.5
m nut height 4 – 6
h 11 – 13
r Edgesrounded(radiusleftunspecified)
d2 9 – 12
d3 7.5 – 9
g ≥ 1.5 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 314
M6
e width across corners 29 – 32
m nut height 5 – 7
h 14 – 16
r Edgesrounded(radiusleftunspecified)
d2 11 – 14
d3 9 – 11
g ≥ 1.5 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 314
M8
e width across corners 35 – 38
m nut height 6.5 – 8.5
h 17 – 19
r Edgesrounded(radiusleftunspecified)
d2 13 – 16
d3 10.5 – 12.5
g ≥ 2 Thread · ISO 261/262
Pitch P 1.25
d2 7.188
d3 6.466
Tap drill 6.75
Stress area As 36.61 mm² Size sheet · DIN 314
M10
e width across corners 47 – 50
m nut height 8 – 10
h 22 – 24
r Edgesrounded(radiusleftunspecified)
d2 18 – 21
d3 14 – 16
g ≥ 3.6 Thread · ISO 261/262
Pitch P 1.5
d2 9.026
d3 8.16
Tap drill 8.5
Stress area As 57.99 mm² Size sheet · DIN 314
M12
e width across corners 63 – 66
m nut height 10 – 13
h 29 – 32
r Edgesrounded(radiusleftunspecified)
d2 21 – 24
d3 17 – 19
g ≥ 4.1 Thread · ISO 261/262
Pitch P 1.75
d2 10.863
d3 9.853
Tap drill 10.25
Stress area As 84.27 mm² 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.