DINCurrentDraft · single source

DIN 921

Slotted pan head screws with large head

National equivalents

PN 82280

Head · drive: Pan head · Slot
Thread: Metric ISO coarse thread
Tolerance: up to size M1,4 - 4h, from size M1,6 - 6g
Property classes: 5.8A1
Materials: SteelStainlessBrass

Dimensions

mm · values as the standard states them

Size	k	t	n
8	1.8	≥ 0.9	0.8
12	2.4	≥ 1.2	1
16	2.7	≥ 1.3	1.2
20	3.1	≥ 1.5	1.6

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 921

k: head height; 2.4
t: groove depth; ≥ 1.2
n: groove width; 1

Standard lengths

5 · 6 · 8 · 10 · 12 · 16

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

ISO 1207 — Slotted cheese head screws ISO 1580 — Slotted pan head screws ISO 7048 — Cross recessed cheese head screws ISO 14580 — Hexalobular socket cheese head screws All 26 standards of this type →

Dimensions

Help verify the next 50 standards.