Dimensions mm · values as the standard states them Size P d b L1 L2 M8 1.25 8.5
9
109
20.5
M10 1.5 8.5
10.2
127
29
M12 1.75 10.5
15
135
34
M16 2 12.5
20
170
38
M20 2.5 17
23.5
182
41
M24 3 20.5
30
210
42
M30 3.5 25
34
240
68
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 1480 JJ
M8
d diameter pin 8.5
b width 9
L1 length 109
L2 length 20.5 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 1480 JJ
M10
d diameter pin 8.5
b width 10.2
L1 length 127
L2 length 29 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 1480 JJ
M12
d diameter pin 10.5
b width 15
L1 length 135
L2 length 34 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 1480 JJ
M16
d diameter pin 12.5
b width 20
L1 length 170
L2 length 38 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 1480 JJ
M20
d diameter pin 17
b width 23.5
L1 length 182
L2 length 41 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 1480 JJ
M24
d diameter pin 20.5
b width 30
L1 length 210
L2 length 42 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 1480 JJ
M30
d diameter pin 25
b width 34
L1 length 240
L2 length 68 Thread · ISO 261/262
Pitch P 3.5
d2 27.727
d3 25.706
Tap drill 26.5
Stress area As 560.59 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.