Dimensions mm · values as the standard states them Size P d1 s e m da r mass M6 1 7
h14
h13
10
≥ 11.05
9
js15
≤ 7
9
5
M8 1.25 9
h14
h13
13
≥ 14.38
12
js15
≤ 9
11
9.6
M10 1.5 11.5
h14
h13
16
≥ 17.77
15
js15
≤ 11
15
21
M12 1.75 14
h14
h13
18
≥ 20.03
18
js15
≤ 13
17
31.5
M16 2 18
h14
h13
24
≥ 26.75
24
js15
≤ 17
22
61
M20 2.5 22
h14
h13
30
≥ 33.53
30
js15
≤ 21
27
120
M24 3 26
h14
h14
36
≥ 39.98
36
js15
≤ 25
32
206
M30 3.5 32
h14
h14
46
≥ 51.28
45
js15
≤ 31
41
419
M36 4 38
h14
h14
55
≥ 61.31
54
js15
≤ 37
50
715
M42 4.5 44
h14
h14
65
≥ 72.61
63
js15
≤ 43
58
1170
M48 5 52
h14
h14
75
≥ 83.91
72
js15
≤ 50
67
1800
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 6330
M6
d1 diameter of the chamfer 7
s width across flats h13
e width across corners ≥ 11.05
m nut height 9
da transition diameter ≤ 7
r radius 9
mass mass per 1000 pieces (kg) 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 6330
M8
d1 diameter of the chamfer 9
s width across flats h13
e width across corners ≥ 14.38
m nut height 12
da transition diameter ≤ 9
r radius 11
mass mass per 1000 pieces (kg) 9.6 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 6330
M10
d1 diameter of the chamfer 11.5
s width across flats h13
e width across corners ≥ 17.77
m nut height 15
da transition diameter ≤ 11
r radius 15
mass mass per 1000 pieces (kg) 21 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 6330
M12
d1 diameter of the chamfer 14
s width across flats h13
e width across corners ≥ 20.03
m nut height 18
da transition diameter ≤ 13
r radius 17
mass mass per 1000 pieces (kg) 31.5 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 6330
M16
d1 diameter of the chamfer 18
s width across flats h13
e width across corners ≥ 26.75
m nut height 24
da transition diameter ≤ 17
r radius 22
mass mass per 1000 pieces (kg) 61 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 6330
M20
d1 diameter of the chamfer 22
s width across flats h13
e width across corners ≥ 33.53
m nut height 30
da transition diameter ≤ 21
r radius 27
mass mass per 1000 pieces (kg) 120 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 6330
M24
d1 diameter of the chamfer 26
s width across flats h14
e width across corners ≥ 39.98
m nut height 36
da transition diameter ≤ 25
r radius 32
mass mass per 1000 pieces (kg) 206 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 6330
M30
d1 diameter of the chamfer 32
s width across flats h14
e width across corners ≥ 51.28
m nut height 45
da transition diameter ≤ 31
r radius 41
mass mass per 1000 pieces (kg) 419 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 6330
M36
d1 diameter of the chamfer 38
s width across flats h14
e width across corners ≥ 61.31
m nut height 54
da transition diameter ≤ 37
r radius 50
mass mass per 1000 pieces (kg) 715 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 6330
M42
d1 diameter of the chamfer 44
s width across flats h14
e width across corners ≥ 72.61
m nut height 63
da transition diameter ≤ 43
r radius 58
mass mass per 1000 pieces (kg) 1170 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 6330
M48
d1 diameter of the chamfer 52
s width across flats h14
e width across corners ≥ 83.91
m nut height 72
da transition diameter ≤ 50
r radius 67
mass mass per 1000 pieces (kg) 1800 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.