DINCurrentDraft · single source

DIN 97

Slotted countersunk head wood screws

National equivalents

CSN 021814 · PN 82503 · UNI 702

Head · drive: Countersunk (flat) head · Slot
Thread: Wood screw thread
Tolerance: thread as DIN 7998
Property classes: A2A4
Materials: SteelStainlessBrass

Dimensions

mm · values as the standard states them

Size	dk	k	t	n
2	3.8	≤ 1.2	0.4 – 0.6	0.5
2.5	4.7	≤ 1.5	0.5 – 0.7	0.6
3	5.6	≤ 1.65	0.6 – 0.85	0.8
3.5	6.5	≤ 1.93	0.7 – 1	0.8
4	7.5	≤ 2.2	0.8 – 1.1	1
4.5	8.3	≤ 2.35	0.9 – 1.2	1
5	9.2	≤ 2.5	1 – 1.3	1.2
6	11	≤ 3	1.2 – 1.6	1.6
7	12.5	≤ 3.5	1.4 – 1.9	2
8	14.5	≤ 4	1.6 – 2.1	2

Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.

Size sheet · DIN 97

dk: head diameter; 7.5
k: head height; ≤ 2.2
t: 0.8 – 1.1
n: groove width; 1

Provenance

Draft — values taken from a single source and not yet cross-checked.

fasteners.eudimensions, lengths, materials, property classes, current norm, equivalent norms

Accessed 2026-09-23 · For design and safety-critical use, consult the current edition of the standard.

Same product type

DIN 95 — Slotted raised countersunk head wood screws DIN 96 — Slotted round head wood screws DIN 571 — Hexagon head wood screws (coach screws)DIN 7995 — Cross recessed raised countersunk head wood screws All 7 standards of this type →

Dimensions

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