DIN 7513 Type A Self-Tapping Screw with Hexagon Head

The German standard DIN 7513 covers self-tapping screws with hexagon head. These fasteners are used to join metal or plastic parts: the screw is installed into a hole and cuts its own thread as it is driven in.

The screw’s special thread configuration creates a strong connection that resists loosening. The hexagon head allows convenient driving and removal with a wrench.

Materials and application features

DIN 7513 screws are made of high-strength carbon hardened steel. The fasteners may have a zinc coating for increased corrosion resistance — such products are suitable for use in aggressive environments. The coating also gives the fasteners a silvery tint.

The screws are used in mechanical engineering, instrument making and other manufacturing industries, as well as in the assembly of metal and plastic structures. Fasteners to DIN 7516 can be used as an equivalent.

Dimensions of DIN 7513 A self-tapping screws, in mm:

dk	5.5	7	8.5	10	13
k	2	2.6	3.3	3.9	5.0
n	0.8	1.2	1.2	1.6	2
t	0.85	1.1	1.3	1.6	2
l	d
	M3	M4	M5	M6	M8
6
8
10
12
16
20
25
30
35
40
50

d		M2.5	M3	M4	M5	M6	M8
P		0.45	0.5	0.7	0.8	1	1.25
dk		4.7	5.5	8.4	9.3	11.3	15.8
k		1.5	1.65	2.7	2.7	3.3	4.65
t		0.75	0.85	1.3	1.4	1.6	2.3
n		0.8	1	1.51	1.51	1.91	2.31
l	min.	6	6	8	10	12	14
	max.	20	22	25	30	35	40