DIN 7973 Self-Tapping Screw

DIN 7973 is a self-tapping screw with a raised countersunk head and slot. It is used to fasten components to metal, wood, plastic and other materials. Manufactured from carbon steel, stainless steel A2 and A4. Carbon steel self-tapping screws are zinc-plated. Complies with ISO 1483.

Equivalent: ISO 1482

DIN 7973 self-tapping screw

The fastener meets the requirements of the German national standard and the international classification system ISO 1483.

The screw has an elongated shank with external thread and a head with a slot, flats, or combination recess for a shaped screwdriver. DIN 7973 has a raised countersunk head with a slot for a standard screwdriver. The screw can be installed by hand with a screwdriver or using a pneumatic or electric screwdriver.

Form “C” has a pointed end. The surface is zinc-plated for corrosion protection. Stainless steel grades A2 and A4 are also used for manufacturing.

DIN 7973

Standard DIN 7973 complies with ISO 1483.

Description: DIN 7973 is a self-tapping screw with a raised countersunk head, slot, and full thread. Form C has a pointed end.

Materials:

• Steel
• Coated steel: electrogalvanized
• Stainless steel: A2, A4

Dimensions of DIN 7973 self-tapping screws, mm:

dk	4.3	5.5	6.8	7.5	8.1	9.5	10.8	12.4
f	0.7	0.9	1.2	1.3	1.4	1.5	1.7	2
k	1.3	1.7	2.1	2.3	2.5	3	3.4	3.8
n	0.6	0.8	1	1	1.2	1.2	1.6	1.6
l	d
	2.2	2.9	3.5	3.9	4.2	4.8	5.5	6.3
6.5
9.5
13
16
19
22
25
32
38
45
50
60
70
80
90
100

Table of DIN 7973 self-tapping screw dimensions, mm

d	2.2	2.9	3.5	3.9	4.2	4.8	5.5	6.3
dk	4.3	5.5	6.8	7.5	8.1	9.5	10.8	12.4
k	1.3	1.7	2.1	2.3	2.5	3.0	3.4	3.8
f	0.7	0.9	1.2	1.3	1.4	1.5	1.7	2.0
n	0.6	0.8	1.0	1.0	1.2	1.2	1.6	1.6

Designations:

d - thread diameter

dk - raised countersunk head diameter

k - height of the countersunk part of the head

f - height of the raised part of the head

n - slot width