DIN 7982 Self-tapping screw with countersunk head and cross recess

DIN 7982 is a self-tapping screw with countersunk head and cross recess, used in mechanical engineering and construction for joining thin metal sheets to a base. When the thickness of the plane being attached is up to 0.9 mm, no pre-drilling is required — the screw cuts its own thread into both the base and the attached material. Above this thickness, pre-drilling is required. Equivalents: ISO 7050, GOST 1145, GOST 10619, GOST 11652.

DIN 7982 Self-tapping screw with countersunk head

Using this self-tapping screw eliminates the need for pre-drilling with an electric drill, which reduces power consumption and avoids the use of drill bits in high-volume installation.

For reliable fastening of a part or thin metal sheet, the self-tapping screw is made of high-strength materials — carbon or yellow-passivated steels. After manufacturing, the hardware undergoes additional treatment with a zinc anti-corrosion coating, allowing the self-tapping screws to be used in humid conditions and mildly acidic environments.

The self-tapping screw has a self-cutting double-start or single-start thread. The head is designed so that during installation it sits flush with the surface or sinks slightly into it — the fastening remains practically invisible. For additional concealment, the head can be covered with a decorative cap of the desired colour.

DIN 7982 Screw

DIN 7982 screw enables fast installation and is in demand in the construction industry.

Used in construction and mechanical engineering to fasten products and materials to metal sheets and frames: without pre-drilling at a thickness of up to 0.9 mm, with pre-drilling up to 6 mm. The thread is dense, self-cutting, single-start or double-start. When driven in, the head sits flush with the surface, and a universal cap of any colour can be inserted into it to match the self-tapping screw. FLOK supplies DIN 7982 self-tapping screws made of carbon electro-galvanized steel, yellow-passivated steel or stainless steel.

Dimension table for countersunk head self-tapping screws (self-drilling screws) DIN 7982, mm

d	ST2.2	ST2.9	ST3.5	ST3.9	ST4.2	ST4.8	ST5.5	ST6.3
dk DIN/ISO	4.3/3.8	5.5	6.8/7.3	7.5/-	8.1/8.4	9.5/9.3	10.8/10.3	12.4/11.3
k DIN/ISO	1.3/1.1	1.7	2.1/2.35	2.3/-	2.5/2.6	3.0/2.8	3.4/3.0	3.8/3.15
PH, PZ	0	1	2	2	2	2	3	3
ISR	-	T10	T15	T15	T20	T25	T25	T30
y form C	2	2.6	3.2	3.2	3.7	4.3	5	6
y form F	1.6	2.1	2.5	2.7	2.8	3.2	3.6	3.6

Designations:

d - thread diameter

dk - countersunk head diameter

k - countersunk head height, max.

PH, PZ - cross recess bit size

ISR - Torx bit size

y - tip length

k	1.7	2.1	2.3	2.5	3.0
d1	5.5	6.8	7.5	8.1	9.5
n:o	1	2	2	2

L (mm)	d
	2.9	3.5	3.9	4.2	4.8
6.5
9.5
13
16
19
25
32
38
50