Dimensions mm · values as the standard states them Size P ds b l mass M6 1 6
pitchdiameter – 6
35
128 – 132
26
M8 1.25 8
pitchdiameter – 8
40
138 – 142
49.2
M10 1.5 10
pitchdiameter – 10
45
148 – 152
83.5
M12 1.75 12
pitchdiameter – 12
55
168 – 172
135
M16 2 16
pitchdiameter – 16
65
187.7 – 192.3
273
M20 2.5 20
pitchdiameter – 20
75
207.7 – 212.3
473
M24 3 24
pitchdiameter – 24
85
227.7 – 232.3
745
M30 3.5 30
pitchdiameter – 30
105
267.4 – 272.6
1370
M36 4 36
pitchdiameter – 36
125
307.4 – 312.6
2280
M42 4.5 42
pitchdiameter – 42
145
—
3510
M48 5 48
pitchdiameter – 48
165
387.1 – 392.9
5110
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 525
M6
ds shank diameter 6
b thread length 35
l length of bolt 128 – 132
mass mass per 1000 pieces (kg) 26 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 525
M8
ds shank diameter 8
b thread length 40
l length of bolt 138 – 142
mass mass per 1000 pieces (kg) 49.2 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 525
M10
ds shank diameter 10
b thread length 45
l length of bolt 148 – 152
mass mass per 1000 pieces (kg) 83.5 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 525
M12
ds shank diameter 12
b thread length 55
l length of bolt 168 – 172
mass mass per 1000 pieces (kg) 135 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 525
M16
ds shank diameter 16
b thread length 65
l length of bolt 187.7 – 192.3
mass mass per 1000 pieces (kg) 273 Thread · ISO 261/262
Pitch P 2
d2 14.701
d3 13.546
Tap drill 14
Stress area As 156.67 mm² Size sheet · DIN 525
M20
ds shank diameter 20
b thread length 75
l length of bolt 207.7 – 212.3
mass mass per 1000 pieces (kg) 473 Thread · ISO 261/262
Pitch P 2.5
d2 18.376
d3 16.933
Tap drill 17.5
Stress area As 244.79 mm² Size sheet · DIN 525
M24
ds shank diameter 24
b thread length 85
l length of bolt 227.7 – 232.3
mass mass per 1000 pieces (kg) 745 Thread · ISO 261/262
Pitch P 3
d2 22.051
d3 20.319
Tap drill 21
Stress area As 352.5 mm² Size sheet · DIN 525
M30
ds shank diameter 30
b thread length 105
l length of bolt 267.4 – 272.6
mass mass per 1000 pieces (kg) 1370 Thread · ISO 261/262
Pitch P 3.5
d2 27.727
d3 25.706
Tap drill 26.5
Stress area As 560.59 mm² Size sheet · DIN 525
M36
ds shank diameter 36
b thread length 125
l length of bolt 307.4 – 312.6
mass mass per 1000 pieces (kg) 2280 Thread · ISO 261/262
Pitch P 4
d2 33.402
d3 31.093
Tap drill 32
Stress area As 816.72 mm² Size sheet · DIN 525
M42
ds shank diameter 42
b thread length 145
mass mass per 1000 pieces (kg) 3510 Thread · ISO 261/262
Pitch P 4.5
d2 39.077
d3 36.479
Tap drill 37.5
Stress area As 1120.91 mm² Size sheet · DIN 525
M48
ds shank diameter 48
b thread length 165
l length of bolt 387.1 – 392.9
mass mass per 1000 pieces (kg) 5110 Thread · ISO 261/262
Pitch P 5
d2 44.752
d3 41.866
Tap drill 43
Stress area As 1473.15 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.
Data notes (1) 1 value(s) omitted after consistency checks: M42 l: min 347.1 > max 252.9 in source — min/max omitted