DIN 7991 | Fasten.it

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Dimensions in mm - source DIN 7991
Publication date: 01/1986 - Replaces DIN 7991: 01/1970 edition
d thread size	P	b (l<=125)	B (l>125<=200)	b (l>200)	dk max=nom	dk min	k max	α+2°	t max=nom	s nom	e min
M 3	0.5	12	-	-	6	5.7	1.7	90°	1.2	2	2.3
M 4
M 5
M 6
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24

DIN 7991- ≈ mass in kg x1000 pcs, (ρ=7,85 kg/dm³) - commercial sizes
d thread size	M 3	M 4	M 5	M 6	M 8	M 10	M 12	M 14	M 16	M 18	M 20	M 22	M 24
nominal length l
6	0.41	0.77
8	0.47	0.92	1.6	2.35
10	0.56	1.07	1.85	2.7	5.47
12
16
20
25
30
35
40
45
50
55
60
65
70
75
80
90
100
110
120
130
140
150
160
170
180
190
200

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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Standard DIN 7991