DIN 7971 Self-Tapping Screw

DIN 7971 self-tapping screw with slotted cylinder head and full thread. Form C — with pointed end, form F — with blunt end.

Materials:

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

Equivalent: ISO 1481.

DIN 7971 Self-Tapping Screw

Standard DIN 7971 corresponds to ISO 1481.

Description: self-tapping screw with slotted cylinder head and full thread. Form C — with pointed end, form F — with blunt end.

Materials:

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

Dimensions of DIN 7971 self-tapping screws, mm:

dk	4.2	5.6	6.9	7.5	8.2	9.5	10.8	12.5
k min	1.15	1.5	1.85	2	2.15	2.5	2.85	3.3
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

Dimensions of DIN 7971 self-tapping screws for metal, mm

d	2.2	2.9	3.5	3.9	4.2	4.8	5.5	6.3
dk	4.2	5.6	6.9	7.5	8.2	9.5	10.8	12.5
k	1.35	1.75	2.1	2.25	2.45	2.8	3.2	3.65
n	0.6	0.8	1.0	1.0	1.2	1.2	1.6	1.6

Designations:

d — thread diameter

dk — head diameter

k — head height, max

n — slot width