Dimensions mm · values as the standard states them Size P a1 a2 b1 b2 d2 d3 f g l1 l2 l3 mass r3 4 8
8
4
B13
M4
8
0.5
16
29
24
6
≈ 0.007
0.5
5 10
10
5
B13
M5
9
0.5
20
36
30
7.5
≈ 0.013
0.5
6 12
12
6
B13
M6
10
0.5
24
43
36
9
≈ 0.022
0.5
8 16
16
8
B13
M8
14
0.5
32
58
48
12
≈ 0.054
0.5
H9 a1
+0,3-0,16
B13
Maximum
Fine-thread
±0,3
±0,2
±0,5
±0,5
Maximum
±0,2
≈ Weightkgapprox.
r3
10 20
20
10
+0,7+0,15
M10x1,25
18
0.5
40
72
60
15
≈ 0.116
0.5
12 24
24
12
+0,7+0,15
M12x1,5
20
0.5
48
86
72
18
≈ 0.175
0.5
14 27
27
14
+0,7+0,15
M14x1,5
24
1
56
101
85
22.5
≈ 0.258
1
16 32
32
16
+0,7+0,15
M16x1,5
26
1
64
115
96
24
≈ 0.411
1
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 71752
4
a1 8
a2 8
b1 4
b2 B13
d2 the nominal diameter of the thread M4
d3 Outer diameter 8
f 0.5
g distance between the bottom of the thread to axes 16
l1 fork length 29
l2 length to axis of ensuring 24
l3 length of the outer pin 6
mass mass per 1000 pieces (kg) ≈ 0.007
r3 0.5 Size sheet · DIN 71752
5
a1 10
a2 10
b1 5
b2 B13
d2 the nominal diameter of the thread M5
d3 Outer diameter 9
f 0.5
g distance between the bottom of the thread to axes 20
l1 fork length 36
l2 length to axis of ensuring 30
l3 length of the outer pin 7.5
mass mass per 1000 pieces (kg) ≈ 0.013
r3 0.5 Size sheet · DIN 71752
6
a1 12
a2 12
b1 6
b2 B13
d2 the nominal diameter of the thread M6
d3 Outer diameter 10
f 0.5
g distance between the bottom of the thread to axes 24
l1 fork length 43
l2 length to axis of ensuring 36
l3 length of the outer pin 9
mass mass per 1000 pieces (kg) ≈ 0.022
r3 0.5 Size sheet · DIN 71752
8
a1 16
a2 16
b1 8
b2 B13
d2 the nominal diameter of the thread M8
d3 Outer diameter 14
f 0.5
g distance between the bottom of the thread to axes 32
l1 fork length 58
l2 length to axis of ensuring 48
l3 length of the outer pin 12
mass mass per 1000 pieces (kg) ≈ 0.054
r3 0.5 Size sheet · DIN 71752
H9
a1 a1
a2 +0,3-0,16
b1 B13
b2 Maximum
d2 the nominal diameter of the thread Fine-thread
d3 Outer diameter ±0,3
f ±0,2
g distance between the bottom of the thread to axes ±0,5
l1 fork length ±0,5
l2 length to axis of ensuring Maximum
l3 length of the outer pin ±0,2
mass mass per 1000 pieces (kg) ≈ Weightkgapprox.
r3 r3 Size sheet · DIN 71752
10
a1 20
a2 20
b1 10
b2 +0,7+0,15
d2 the nominal diameter of the thread M10x1,25
d3 Outer diameter 18
f 0.5
g distance between the bottom of the thread to axes 40
l1 fork length 72
l2 length to axis of ensuring 60
l3 length of the outer pin 15
mass mass per 1000 pieces (kg) ≈ 0.116
r3 0.5 Size sheet · DIN 71752
12
a1 24
a2 24
b1 12
b2 +0,7+0,15
d2 the nominal diameter of the thread M12x1,5
d3 Outer diameter 20
f 0.5
g distance between the bottom of the thread to axes 48
l1 fork length 86
l2 length to axis of ensuring 72
l3 length of the outer pin 18
mass mass per 1000 pieces (kg) ≈ 0.175
r3 0.5 Size sheet · DIN 71752
14
a1 27
a2 27
b1 14
b2 +0,7+0,15
d2 the nominal diameter of the thread M14x1,5
d3 Outer diameter 24
f 1
g distance between the bottom of the thread to axes 56
l1 fork length 101
l2 length to axis of ensuring 85
l3 length of the outer pin 22.5
mass mass per 1000 pieces (kg) ≈ 0.258
r3 1 Size sheet · DIN 71752
16
a1 32
a2 32
b1 16
b2 +0,7+0,15
d2 the nominal diameter of the thread M16x1,5
d3 Outer diameter 26
f 1
g distance between the bottom of the thread to axes 64
l1 fork length 115
l2 length to axis of ensuring 96
l3 length of the outer pin 24
mass mass per 1000 pieces (kg) ≈ 0.411
r3 1 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.