# Plain washers, small series, ISO 7092 / DIN 433: M1.6–M36 bore, outside diameter, thickness

> What are the ISO 7092 / DIN 433 small washer dimensions, for example the M3 and M6 bore and outside diameter?

- Category: Hardware › Fasteners
- Kind: Standard part
- Basis: ISO 7092:2000 Table 1 preferred sizes (ISO preview via iTeh), cross-checked against JC Fasteners' ISO 7092 sheet and Industrial Products' ISO 7092 table
- Page: https://xemstudio.com/objects/plain-washers-small-series-iso-7092/ · JSON: https://xemstudio.com/api/geometry?object=plain-washers-small-series-iso-7092 · Plain text: https://xemstudio.com/objects/plain-washers-small-series-iso-7092/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Small-series plain washer, product grade A, for cylindrical-head screws such as ISO 4762 socket caps. Columns: bore d1 nominal (= minimum), outside d2 nominal (= maximum), thickness h nominal. Preferred sizes only.
- Files are flat annuli at the nominal sizes; the standard allows no chamfer requirement on this series.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| bore | d1: 1.7 (M1.6) to 37 (M36); M6 6.4 | screw shank, medium clearance | designed | all |
| outside | d2: 3.5 (M1.6) to 60 (M36); M6 11 | counterbore floor under cheese / socket heads: counterbore Ø ≥ d2 | designed | all |

## Sizes

| thread | d1 (bore) | d2 (OD) | h |
|---|---|---|---|
| M1.6 | 1.7 | 3.5 | 0.3 |
| M2 | 2.2 | 4.5 | 0.3 |
| M2.5 | 2.7 | 5 | 0.5 |
| M3 | 3.2 | 6 | 0.5 |
| M4 | 4.3 | 8 | 0.5 |
| M5 | 5.3 | 9 | 1 |
| M6 | 6.4 | 11 | 1.6 |
| M8 | 8.4 | 15 | 1.6 |
| M10 | 10.5 | 18 | 1.6 |
| M12 | 13 | 20 | 2 |
| M16 | 17 | 28 | 2.5 |
| M20 | 21 | 34 | 3 |
| M24 | 25 | 39 | 4 |
| M30 | 31 | 50 | 4 |
| M36 | 37 | 60 | 5 |

## Where the files are

- ISO (iTeh preview): [ISO 7092:2000 Table 1, preferred dimensions](https://cdn.standards.iteh.ai/samples/13674/95f610684c2649df8c45073e2ed6d085/ISO-7092-2000.pdf) — web — Publisher's page; dimensions are facts
- fasten.it: [DIN EN ISO 7092 plain washers, small series: d1, d2, h](https://fasten.it/norms/norm/din_en_iso_7092) — web — Publisher's page; dimensions are facts
- fasteners.eu: [ISO 7092 table: d1, d2, h by thread size](https://www.fasteners.eu/standards/ISO/7092/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (15 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/index.json

- iso7092-m1p6: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m1p6.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m1p6.stl) — ISO 7092 M1.6: Ø1.7 bore × Ø3.5 × 0.3
- iso7092-m2: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m2.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m2.stl) — ISO 7092 M2: Ø2.2 bore × Ø4.5 × 0.3
- iso7092-m2p5: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m2p5.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m2p5.stl) — ISO 7092 M2.5: Ø2.7 bore × Ø5 × 0.5
- iso7092-m3: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m3.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m3.stl) — ISO 7092 M3: Ø3.2 bore × Ø6 × 0.5
- iso7092-m4: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m4.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m4.stl) — ISO 7092 M4: Ø4.3 bore × Ø8 × 0.5
- iso7092-m5: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m5.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m5.stl) — ISO 7092 M5: Ø5.3 bore × Ø9 × 1
- iso7092-m6: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m6.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m6.stl) — ISO 7092 M6: Ø6.4 bore × Ø11 × 1.6
- iso7092-m8: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m8.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m8.stl) — ISO 7092 M8: Ø8.4 bore × Ø15 × 1.6
- iso7092-m10: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m10.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m10.stl) — ISO 7092 M10: Ø10.5 bore × Ø18 × 1.6
- iso7092-m12: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m12.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m12.stl) — ISO 7092 M12: Ø13 bore × Ø20 × 2
- iso7092-m16: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m16.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m16.stl) — ISO 7092 M16: Ø17 bore × Ø28 × 2.5
- iso7092-m20: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m20.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m20.stl) — ISO 7092 M20: Ø21 bore × Ø34 × 3
- iso7092-m24: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m24.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m24.stl) — ISO 7092 M24: Ø25 bore × Ø39 × 4
- iso7092-m30: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m30.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m30.stl) — ISO 7092 M30: Ø31 bore × Ø50 × 4
- iso7092-m36: [STEP](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m36.step) · [STL](https://xemstudio.com/files/hardware/plain-washers-small-series-iso-7092/iso7092-m36.stl) — ISO 7092 M36: Ø37 bore × Ø60 × 5

## Questions

**What size is an M6 small-series washer?**

ISO 7092 (DIN 433) M6: 6.4 mm bore, 11 mm outside diameter, 1.6 mm thick.

**How is ISO 7092 different from a normal M3 washer?**

The small series has a smaller outside diameter for cheese and socket heads: M3 is 3.2 × 6 × 0.5 mm.

## Fits with

- [Flat washers, M2–M8 (ISO 7089)](https://xemstudio.com/objects/flat-washers-metric/)
- [Flat washers, M10 to M24 (ISO 7089 / DIN 125-A)](https://xemstudio.com/objects/flat-washers-metric-m10-m24/)
- [Large (fender) washers, DIN 9021 / ISO 7093: M2.5–M36 bore, outside diameter, thickness + nylon variant + 8 washer files](https://xemstudio.com/objects/large-washers-din-9021-iso-7093/)
- [Spring lock washers, DIN 127 B (split washers, rectangular section): M2–M100 bore, outside diameter, width, thickness, free height](https://xemstudio.com/objects/spring-lock-washers-din-127-b/)
- [Socket head cap screws, M2–M8 (ISO 4762 / DIN 912)](https://xemstudio.com/objects/socket-head-cap-screws-metric/)