Dimensions mm · values as the standard states them Size P ds dk k b 125 < l ≤ 200 b l > 200 b l ≤ 125 g i M6 1 5.52 – 6
11.45 – 12.55
4
24
—
18
2.1 – 2.5
≥ 2.8
M8 1.25 7.42 – 8
15.45 – 16.55
5
28
41
22
2.6 – 3
≥ 3.5
M10 1.5 9.42 – 10
18.35 – 19.65
5.5
32
45
26
2.72 – 3.2
≥ 4.2
M12 1.75 11.3 – 12
23.35 – 24.65
7
36
49
30
3.12 – 3.6
≥ 5.7
M16 2 15.3 – 16
31.2 – 32.8
9
44
57
38
3.72 – 4.2
≥ 7.5
M20 2.5 19.16 – 20
31.2 – 32.8
11.5
52
65
46
4.92 – 5.4
≥ 5.7
M24 3 23.16 – 24
37.2 – 38.8
13
60
73
54
6.02 – 6.6
≥ 6.7
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.
Length tolerances 20 18.95 – 21.05
25 23.95 – 26.05
30 28.95 – 31.05
35 33.75 – 36.25
40 38.75 – 41.25
45 43.75 – 46.25
50 48.75 – 51.25
55 53.5 – 56.5
60 58.5 – 61.5
65 63.5 – 66.5
70 68.5 – 71.5
80 78.5 – 81.5
90 88.25 – 91.75
100 98.25 – 101.75
110 108.25 – 111.75
120 118.25 – 121.75
130 128 – 132
140 138 – 142
150 148 – 152
160 156 – 164
Size sheet · DIN 604
M6
ds shank diameter 5.52 – 6
dk head diameter 11.45 – 12.55
k head height 4
b thread length (125 < l ≤ 200) 24
b thread length (l ≤ 125) 18
g width of the nib 2.1 – 2.5
i height of the nose ≥ 2.8 Thread · ISO 261/262
Pitch P 1
d2 5.35
d3 4.773
Tap drill 5
Stress area As 20.12 mm² Standard lengths
20 · 25 · 30 · 35 · 40 · 45 · 50 · 55 · 60 · 65 · 70 · 80 · 90 · 100
Size sheet · DIN 604
M8
ds shank diameter 7.42 – 8
dk head diameter 15.45 – 16.55
k head height 5
b thread length (125 < l ≤ 200) 28
b thread length (l > 200) 41
b thread length (l ≤ 125) 22
g width of the nib 2.6 – 3
i height of the nose ≥ 3.5 Thread · ISO 261/262
Pitch P 1.25
d2 7.188
d3 6.466
Tap drill 6.75
Stress area As 36.61 mm² Standard lengths
20 · 25 · 30 · 35 · 40 · 45 · 50 · 55 · 60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150
Size sheet · DIN 604
M10
ds shank diameter 9.42 – 10
dk head diameter 18.35 – 19.65
k head height 5.5
b thread length (125 < l ≤ 200) 32
b thread length (l > 200) 45
b thread length (l ≤ 125) 26
g width of the nib 2.72 – 3.2
i height of the nose ≥ 4.2 Thread · ISO 261/262
Pitch P 1.5
d2 9.026
d3 8.16
Tap drill 8.5
Stress area As 57.99 mm² Standard lengths
20 · 25 · 30 · 35 · 40 · 45 · 50 · 55 · 60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150 · 160
Size sheet · DIN 604
M12
ds shank diameter 11.3 – 12
dk head diameter 23.35 – 24.65
k head height 7
b thread length (125 < l ≤ 200) 36
b thread length (l > 200) 49
b thread length (l ≤ 125) 30
g width of the nib 3.12 – 3.6
i height of the nose ≥ 5.7 Thread · ISO 261/262
Pitch P 1.75
d2 10.863
d3 9.853
Tap drill 10.25
Stress area As 84.27 mm² Standard lengths
25 · 30 · 35 · 40 · 45 · 50 · 55 · 60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150 · 160
Size sheet · DIN 604
M16
ds shank diameter 15.3 – 16
dk head diameter 31.2 – 32.8
k head height 9
b thread length (125 < l ≤ 200) 44
b thread length (l > 200) 57
b thread length (l ≤ 125) 38
g width of the nib 3.72 – 4.2
i height of the nose ≥ 7.5 Thread · ISO 261/262
Pitch P 2
d2 14.701
d3 13.546
Tap drill 14
Stress area As 156.67 mm² Standard lengths
30 · 35 · 40 · 45 · 50 · 55 · 60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150 · 160
Size sheet · DIN 604
M20
ds shank diameter 19.16 – 20
dk head diameter 31.2 – 32.8
k head height 11.5
b thread length (125 < l ≤ 200) 52
b thread length (l > 200) 65
b thread length (l ≤ 125) 46
g width of the nib 4.92 – 5.4
i height of the nose ≥ 5.7 Thread · ISO 261/262
Pitch P 2.5
d2 18.376
d3 16.933
Tap drill 17.5
Stress area As 244.79 mm² Standard lengths
50 · 55 · 60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150 · 160
Size sheet · DIN 604
M24
ds shank diameter 23.16 – 24
dk head diameter 37.2 – 38.8
k head height 13
b thread length (125 < l ≤ 200) 60
b thread length (l > 200) 73
b thread length (l ≤ 125) 54
g width of the nib 6.02 – 6.6
i height of the nose ≥ 6.7 Thread · ISO 261/262
Pitch P 3
d2 22.051
d3 20.319
Tap drill 21
Stress area As 352.5 mm² Standard lengths
60 · 65 · 70 · 80 · 90 · 100 · 110 · 120 · 130 · 140 · 150 · 160
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.