Dimensions mm · values as the standard states them Size P s e m b d2 fit H113 d3 d4 h1 h2 mass thread_alt M4 0.7 7
h14
≥ 9
3.5
h14
0.8
±0,15
5
≤ 4.2
≥ 6.4
0.6
±0,1
0.4 – 1.3
0.81
—
M5 0.8 9
h14
≥ 12
4.2
h14
1
±0,15
6
≤ 5.25
≥ 8.2
0.8
±0,1
0.6 – 1.5
1.7
—
M6 1 10
h14
≥ 13
5
h14
1.2
±0,15
7.5
≤ 6.3
≥ 9.1
0.8
±0,1
0.7 – 1.8
2.4
—
M8 1.25 14
h14
≥ 18
6.5
h14
1.5
±0,15
10
≤ 8.4
≥ 12.8
1
±0,1
1.1 – 2
6.5
M8x1
M10 1.5 17
h14
≥ 22
8
h14
1.8
±0,2
12.5
≤ 10.5
≥ 15.6
1.2
±0,1
1.25 – 2.2
11.3
M10x1
M12 1.75 19
h14
≥ 25
9.5
h14
2
±0,2
13.5
≤ 12.6
≥ 17.4
1.4
±0,1
1.75 – 3
16.6
M12x1,5
(M14) 2 22
h14
≥ 28
11.4
h14
2.5
±0,2
16.8
≤ 14.7
≥ 20.4
1.4
±0,1
1.75 – 3.2
26.7
(M14x1,5)
(M16) 2 24
h14
≥ 32
13
h14
2.5
±0,2
18.8
≤ 16.8
≥ 22.4
1.6
±0,1
2 – 4
35.8
(M16x1,5)
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 928
M4
s width across flats 7
e width across corners ≥ 9
m height of the nut 3.5
b 0.8
d2 (fit H113) 5
d3 ≤ 4.2
d4 ≥ 6.4
h1 0.6
h2 0.4 – 1.3
mass mass per 1000 pieces (kg) 0.81 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 928
M5
s width across flats 9
e width across corners ≥ 12
m height of the nut 4.2
b 1
d2 (fit H113) 6
d3 ≤ 5.25
d4 ≥ 8.2
h1 0.8
h2 0.6 – 1.5
mass mass per 1000 pieces (kg) 1.7 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 928
M6
s width across flats 10
e width across corners ≥ 13
m height of the nut 5
b 1.2
d2 (fit H113) 7.5
d3 ≤ 6.3
d4 ≥ 9.1
h1 0.8
h2 0.7 – 1.8
mass mass per 1000 pieces (kg) 2.4 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 928
M8
s width across flats 14
e width across corners ≥ 18
m height of the nut 6.5
b 1.5
d2 (fit H113) 10
d3 ≤ 8.4
d4 ≥ 12.8
h1 1
h2 1.1 – 2
mass mass per 1000 pieces (kg) 6.5
thread_alt alternative / fine thread M8x1 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 928
M10
s width across flats 17
e width across corners ≥ 22
m height of the nut 8
b 1.8
d2 (fit H113) 12.5
d3 ≤ 10.5
d4 ≥ 15.6
h1 1.2
h2 1.25 – 2.2
mass mass per 1000 pieces (kg) 11.3
thread_alt alternative / fine thread M10x1 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 928
M12
s width across flats 19
e width across corners ≥ 25
m height of the nut 9.5
b 2
d2 (fit H113) 13.5
d3 ≤ 12.6
d4 ≥ 17.4
h1 1.4
h2 1.75 – 3
mass mass per 1000 pieces (kg) 16.6
thread_alt alternative / fine thread M12x1,5 Thread · ISO 261/262
Pitch P 1.75
d2 10.863
d3 9.853
Tap drill 10.25
Stress area As 84.27 mm² Size sheet · DIN 928
M14
s width across flats 22
e width across corners ≥ 28
m height of the nut 11.4
b 2.5
d2 (fit H113) 16.8
d3 ≤ 14.7
d4 ≥ 20.4
h1 1.4
h2 1.75 – 3.2
mass mass per 1000 pieces (kg) 26.7
thread_alt alternative / fine thread (M14x1,5) Thread · ISO 261/262
Pitch P 2
d2 12.701
d3 11.546
Tap drill 12
Stress area As 115.44 mm² Size sheet · DIN 928
M16
s width across flats 24
e width across corners ≥ 32
m height of the nut 13
b 2.5
d2 (fit H113) 18.8
d3 ≤ 16.8
d4 ≥ 22.4
h1 1.6
h2 2 – 4
mass mass per 1000 pieces (kg) 35.8
thread_alt alternative / fine thread (M16x1,5) Thread · ISO 261/262
Pitch P 2
d2 14.701
d3 13.546
Tap drill 14
Stress area As 156.67 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.