BS 4320

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Dimensions in mm - source BS 4320
Publication date: 05/1968
Thread size	Type	d min	d1 max	s nom	~Weight (7.85 Kg dm3) Kg/1000 Pcs
M 1	A	1.1	2.5	0.3
M 1.2	A	1.3	3	0.3
M 1.4	A	1.5	3	0.3
M 1.6	A	1.7	4	0.3
M 2	A	2.2	5	0.3
M 2.2	A	2.4	5	0.5
M 2.5	A	2.7	6.5	0.5
M 3	A	3.2	7	0.5	0.119
M 3.5	A	3.7	7	0.5
M 4	A	4.3	9	0.8	0.308
	B
	C	4.3	10	0.8	0.40
M 4.5	A	4.8	9	0.8
M 5	A	5.3	10	1	0.443
	B	5.3	10	0.8	0.36
	C	5.3	12.5	1	0.79
	D
	E	5.5	10	1	0.43
	F
	G	5.5	15	1.6	1.92
M 6	A	6.4	12.5	1.6	1.02
	B	6.4	12.5	0.8	0.57
	C	6.4	14	1.6	1.53
	D	6.4	14	0.8	0.77
	E	6.6	12.5	1.6	1.11
	F
	G	6.6	18	2	3.46
M 7	A	7.4	14	1.6
	B	7.4	14	0.8
	C
	D
	E
	F
	G
M 8
	B
	C
	D
	E
	F
	G
M 10
	B
	C
	D
	E
	F
	G
M 12
	B
	C
	D
	E
	F
	G
M 14
	B
	C
	D
	E
	F
	G
M 16
	B
	C
	D
	E
	F
	G
M 18
	B
	C
	D
	E
	F
	G
M 20
	B
	C
	D
	E
	F
	G
M 22
	B
	C
	D
	E
	F
	G
M 24
	B
	C
	D
	E
	F
	G
M 27
	B
	C
	D
	E
	F
	G
M 30
	B
	C
	D
	E
	F
	G
M 33
	B
	C
	D
	E
	F
	G
M 36
	B
	C
	D
	E
	F
	G
M 39
	B
	C
	D
	E
	F
	G
M 42
	B
	C
	D
	E
	F
	G
M 45
M 48
	B
	C
	D
	E
	F
	G
M 52
M 56
	B
	C
	D
	E
	F
	G
M 60
M 64
	B
	C
	D
	E
	F
	G
M 68

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 BS 4320