Standard DIN 316

Equivalent standards:

UNI 5449

Wing screws with rounded wings

This standard DIN 316 specifies requirements for M4 to M24 wing screws with rounded wings, of product grade C and made of malleable cast iron, steel or copper-zinc alloy.

Dimensions in mm - source DIN 316
Publication date: 07/1998 - Supersedes DIN 316: 06/1983
d1 thread size	P	a max	d2 min	d3 min	e min	g1 min	g2 min	h min	m min
M 4	0.7	2.1	6	5.5	18	1.1	1.7	8.5	3.2
M 5	0.8	2.4	8	7.5	24	1.5	2.3	11	4
M 6	1	3	10	9	30	1.5	2.7	15	5
M 8	1.25	4	13	10.5	36	2	3.6	18	6.5
M 10	1.5	4.5	17	14.5	48	3.6	4.6	23	8
M 12	1.75	5.3	20	17.5	62	4.1	5.6	31	10
M 16	2	6	26	21	70	5.6	6.5	35	13
M 20	2.5	7.5	32	27	86	6.1	7	44	16
M 24	3	9	41	35	106	8.6	9.5	53.5	20

DIN 316 1998 - commercial sizes
thread size	M4	M5	M6	M8	M10	M12	M16	M20	M24
nominal length l
6	X
8	X	X	X
10	X	X	X	X
12	X	X	X	X
14	X	X	X	X
16	X	X	X	X	X	X
18	X	X	X	X	X	X
20		X	X	X	X	X	X
25		X	X	X	X	X	X
30		X	X	X	X	X	X	X
35			X	X	X	X	X	X	X
40			X	X	X	X	X	X	X
45				X	X	X	X	X	X
50				X	X	X	X	X	X
60						X	X	X	X

Wing screws with rounded wings

Dimensions in mm - source DIN 316
Publication date: 07/1998 - Supersedes DIN 316: 06/1983
d1 thread size	P	a max	d2 min	d3 min	e min	g1 min	g2 min	h min	m min
M 4	0.7	2.1	6	5.5	18	1.1	1.7	8.5	3.2
M 5	0.8	2.4	8	7.5	24	1.5	2.3	11	4
M 6	1	3	10	9	30	1.5	2.7	15	5
M 8	1.25	4	13	10.5	36	2	3.6	18	6.5
M 10	1.5	4.5	17	14.5	48	3.6	4.6	23	8
M 12	1.75	5.3	20	17.5	62	4.1	5.6	31	10
M 16	2	6	26	21	70	5.6	6.5	35	13
M 20	2.5	7.5	32	27	86	6.1	7	44	16
M 24	3	9	41	35	106	8.6	9.5	53.5	20

DIN 316 1998 - commercial sizes
thread size	M4	M5	M6	M8	M10	M12	M16	M20	M24
nominal length l
6	X
8	X	X	X
10	X	X	X	X
12	X	X	X	X
14	X	X	X	X
16	X	X	X	X	X	X
18	X	X	X	X	X	X
20		X	X	X	X	X	X
25		X	X	X	X	X	X
30		X	X	X	X	X	X	X
35			X	X	X	X	X	X	X
40			X	X	X	X	X	X	X
45				X	X	X	X	X	X
50				X	X	X	X	X	X
60						X	X	X	X