Specification summary of ISO 7092 as applied to flat washers, small series: the dimensions the standard fixes, the full size range supplied, and the related designations commonly cross-referenced.
ISO 7092 — Scope
ISO 7092 is "Plain washers — Small series — Product grade A".
Tolerance & Product Grades
ISO 7092 is written to product grade A; a different grade of the same part is a different document in the family, not a variant of this one.
Dimensions Specified by ISO 7092
| Size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Thickness h (mm) | h_max (mm) | Reference standard |
|---|---|---|---|---|---|
| M1.6 | 1.7 | 3.5 | 0.3 | 0.35 | ISO 7092 |
| M2 | 2.2 | 4.5 | 0.3 | 0.35 | ISO 7092 |
| M2.5 | 2.7 | 5.0 | 0.5 | 0.55 | ISO 7092 |
| M3 | 3.2 | 6.0 | 0.5 | 0.55 | ISO 7092 |
| M4 | 4.3 | 8.0 | 0.5 | 0.55 | ISO 7092 |
| M5 | 5.3 | 9.0 | 1.0 | 1.1 | ISO 7092 |
| M6 | 6.4 | 11.0 | 1.6 | 1.8 | ISO 7092 |
| M8 | 8.4 | 15.0 | 1.6 | 1.8 | ISO 7092 |
| M10 | 10.5 | 18.0 | 1.6 | 1.8 | ISO 7092 |
| M12 | 13.0 | 20.0 | 2.0 | 2.2 | ISO 7092 |
| M16 | 17.0 | 28.0 | 2.5 | 2.7 | ISO 7092 |
| M20 | 21.0 | 34.0 | 3.0 | 3.3 | ISO 7092 |
| M24 | 25.0 | 39.0 | 4.0 | 4.3 | ISO 7092 |
| M30 | 31.0 | 50.0 | 4.0 | 4.3 | ISO 7092 |
| M36 | 37.0 | 60.0 | 5.0 | 5.6 | ISO 7092 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Flat Washers, Small Series page.
Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
Companion Standards
ISO 7092 controls the geometry of flat washers, small series. Surface finish is governed by separate finish standards such as ISO 4042 for electroplating, and corrosion testing by ISO 9227 (neutral salt spray). Mechanical performance is set by the documents specific to this part family — ISO 898-1 and ISO 898-2 apply to bolts, screws, studs and nuts, and not here.
Custom manufacturing · Made to drawing
Need a washer to this standard in a non-standard size?
Parts built to ISO 7092 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down. Made by stamping or punching.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
