Standard DIN 318

Wing screws with edeged wings (American form)

This standard DIN 318 specifies dimensions, designation and technical delivery conditions for M4 to M12 wing screws with edged wings, of product grade C and made of malleable cast iron, steel or copper-zinc alloy.

Dimensions in mm - source DIN 318
Publication date: 07/1999
d thread size	M 4	M 5	M 6	M 8	M 10	M 12
P	0.7	0.8	1	1.25	1.5	1.75
a max	2.1	2.4	3	4	4.5	5.3
e min	19	24.5	29	35	47	63
h min	9	11	14	17	22	29
g min	1.1	1.5	1.5	2	3.6	4.1
d2 min	7	9	11	13	18	21
d3 min	5.5	7.5	9	10.5	14	17
m min	3.2	4	5	6.5	8	10

DIN 318 1999 - commercial sizes
thread size	M4	M5	M6	M8	M10	M12
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
30		X	X	X	X	X
35			X	X	X	X
40			X	X	X	X
45				X	X	X
50				X	X	X
60						X

Dimensions in mm - wing nuts commonly used on the market
d thread size	M 3	M 4	M 5	M 6	M 8	M 10	M 12
e	18.5	22	22	26.8	30.3	35.3	47.5
h	8.8	10.5	10.5	12.9	14.8	17.3	22.3
d2	7.8	9.5	9.5	11.9	13.5	15.3	20.5

Standard UNI 5549

Wing screws. Iso metric thread. Finish C.

Wing screws with edeged wings (American form)

Dimensions in mm - source DIN 318
Publication date: 07/1999
d thread size	M 4	M 5	M 6	M 8	M 10	M 12
P	0.7	0.8	1	1.25	1.5	1.75
a max	2.1	2.4	3	4	4.5	5.3
e min	19	24.5	29	35	47	63
h min	9	11	14	17	22	29
g min	1.1	1.5	1.5	2	3.6	4.1
d2 min	7	9	11	13	18	21
d3 min	5.5	7.5	9	10.5	14	17
m min	3.2	4	5	6.5	8	10

DIN 318 1999 - commercial sizes
thread size	M4	M5	M6	M8	M10	M12
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
30		X	X	X	X	X
35			X	X	X	X
40			X	X	X	X
45				X	X	X
50				X	X	X
60						X

Dimensions in mm - wing nuts commonly used on the market
d thread size	M 3	M 4	M 5	M 6	M 8	M 10	M 12
e	18.5	22	22	26.8	30.3	35.3	47.5
h	8.8	10.5	10.5	12.9	14.8	17.3	22.3
d2	7.8	9.5	9.5	11.9	13.5	15.3	20.5