DIN 965 Countersunk Head Screw

The DIN 965 standard covers a countersunk head screw with a cross recess for tightening with a screwdriver or power driver. It is intended for detachable threaded connections of parts: the head sits flush with the material and does not protrude above the surface.

The head has a conical shape and is fully recessed into a pre-drilled hole in the part. DIN 965 fasteners are suitable for joining products made of wood, metal, plastic and other materials. Equivalent fastener products are manufactured to GOST 17475-80 and ISO 7046. Minor discrepancies may exist between the standards.

DIN 965 screw: features

The design of the countersunk head screw ensures a neat connection appearance: the head is hidden within the material and does not protrude above the surface.

Applications

Countersunk head screws are used where a neat and reliable fastening is required: in furniture assembly, in the production of doors and windows, and in other cases where fasteners need to be concealed.

Key features of the countersunk head screw:

• Countersunk head: the screw is recessed into the surface of the material, with no protruding part.
• The screw thread ensures engagement with the material and a strong connection.
• Manufacturing precision: the screws are made to DIN and GOST standards in compliance with dimensional and strength requirements.

Applications and advantages

The choice of countersunk head screws depends on the project and operating conditions. In furniture assembly, the screw provides a flat surface with no protrusions. Countersunk head screws are also used in the installation of metal and wooden structures.

Advantages of the countersunk head screw:

• Aesthetics: the concealed head makes the connection inconspicuous.
• Reliability: the screw provides a strong connection under significant loads.
• Versatility: suitable for working with wood, metal and plastic.

Dimension table for countersunk head screws with cross recess DIN 965 (ISO 7046)

d	M1.6	M2	M2.5	M3	M4	M5	M6	M8	M10
dk ISO/DIN	3	3.8	4.7	5.5/5.6	8.4/7.5	9.3/9.2	11.3/11	15.8/14.5	18.3/18
k ISO/DIN	1/0.96	1.2	1.5	1.65	2.7/2.2	2.7/2.5	3.3/3	4.65/4	5
b	15	16	18	19	22	25	28	34	40
n	0.4	0.5	0.6	0.8	1	1.2	1.6	2	2.5
m	0	1	1	1	2	2	3	4	4

Designations:

d - nominal thread diameter, mm

dk - countersunk head diameter, mm

k - head height, mm

b - minimum thread length of the screw, mm

n - width of the screw head recess, mm

m - cross recess size Ph or Pz

Dimension table for countersunk head screws with Torx drive DIN 965 „ISR“ (ISO 7046)

d	M1.6	M2	M2.5	M3	M4	M5	M6	M8	M10
dk ISO/DIN	3	3.8	4.7	5.5/5.6	8.4/7.5	9.3/9.2	11.3/11	15.8/14.5	18.3/18
k ISO/DIN	1/0.96	1.2	1.5	1.65	2.7/2.2	2.7/2.5	3.3/3	4.65/4	5
b	15	16	18	19	22	25	28	34	40
ISR	T5	T6	T8	T10	T20	T25	T30	T40	T50

Designations:

d - nominal thread diameter, mm

dk - countersunk head diameter, mm

k - head height, mm

b - minimum thread length of the screw, mm

ISR - Torx recess size

Correspondence table between DIN 965 and GOST 17475-80

Parameter	DIN 965	GOST 17475-80
d - nominal thread diameter, mm	from M1.6 to M10	from M1 to M20
l - screw length, mm	from 3 to 60	2 to 120
Thread pitch, mm	0.35 to 1.5	coarse - 0.25 to 2.5 fine - from 1 to 1.5 (for screws M8 - M20)
dk - head diameter, mm	from 3 to 18	from 1.9 to 36
k - head height, mm	from 0.96 to 5	from 0.6 to 10
b - thread length, mm	15 to 40	normal - from 8 to 46 extended - from 16 to 70
Product grade	A	A, B
Recess type	cross Ph or Pz	slot, cross recess

Dimension table for countersunk head screws DIN 965

L (mm)	d
	M3	M4	M5	M6	M8
6
8
10
12
16
20
25
30
35
40
50
60
70
80