Complete DIN 988 Shim Washer Dimensions & Thickness Table
DIN 988 Shim Washer Size Chart & Thickness Table
This DIN 988 reference page brings together the full nominal washer size range, the standard thickness options used for DIN 988 shim washers, and practical notes on how to read the standard. Use the filterable size table below to find the inside diameter and outside diameter you need, then review the thickness options and selection notes for your application.
About DIN 988 shim washers
DIN 988 is a German standard covering shim washers and supporting rings used for precision spacing, axial adjustment, and tolerance compensation. In practical engineering terms, DIN 988 shim washers are selected by three main dimensions: inside diameter, outside diameter, and thickness.
The standard defines the nominal washer sizes and the thickness values used for these shim washers. However, it is important to understand that DIN 988 is a dimensional reference standard. In practice, not every thickness is manufactured or stocked for every nominal diameter.
Complete DIN 988 size table
The table below lists the nominal DIN 988 shim washer sizes and their corresponding inside and outside diameters.
| Nominal Size | Inside Diameter d1 (mm) | Outside Diameter d2 (mm) |
|---|---|---|
| M3 | 3 | 6 |
| M4 | 4 | 8 |
| M5 | 5 | 10 |
| M6 | 6 | 12 |
| M7 | 7 | 13 |
| M8 | 8 | 14 |
| M9 | 9 | 15 |
| M10 | 10 | 16 |
| M11 | 11 | 17 |
| M12 | 12 | 18 |
| M13 | 13 | 19 |
| M14 | 14 | 20 |
| M15 | 15 | 21 |
| M16 | 16 | 22 |
| M17 | 17 | 24 |
| M18 | 18 | 25 |
| M19 | 19 | 26 |
| M20 | 20 | 28 |
| M22 | 22 | 30 |
| M25 | 25 | 35 |
| M26 | 26 | 36 |
| M28 | 28 | 37 |
| M30 | 30 | 40 |
| M32 | 32 | 45 |
| M35 | 35 | 45 |
| M36 | 36 | 45 |
| M37 | 37 | 47 |
| M40 | 40 | 50 |
| M42 | 42 | 52 |
| M45 | 45 | 55 |
| M48 | 48 | 60 |
| M50 | 50 | 62 |
| M52 | 52 | 65 |
| M55 | 55 | 68 |
| M56 | 56 | 70 |
| M60 | 60 | 75 |
| M63 | 63 | 80 |
| M65 | 65 | 85 |
| M70 | 70 | 90 |
| M75 | 75 | 95 |
| M80 | 80 | 100 |
| M85 | 85 | 105 |
| M90 | 90 | 110 |
| M95 | 95 | 115 |
| M100 | 100 | 120 |
DIN 988 thickness options
Standard thickness list
- 0.10 mm
- 0.15 mm
- 0.20 mm
- 0.25 mm
- 0.30 mm
- 0.50 mm
- 1.00 mm
- 1.20 mm
- 1.50 mm
- 2.00 mm
These are the nominal thickness values commonly referenced for DIN 988 shim washers. In practical supply terms, thinner options are more common in smaller diameters, while thicker variants are generally used for larger or heavier-duty applications.
Filterable DIN 988 size table
Use the filters below to narrow the DIN 988 size chart by nominal size or inside diameter.
| Nominal Size | Inside Diameter d1 (mm) | Outside Diameter d2 (mm) |
|---|
Important notes on availability and use
- The size chart above is a dimensional reference for DIN 988 shim washers.
- The thickness list shows the standard nominal thickness values used with DIN 988 washers.
- Not every supplier stocks every diameter and thickness combination.
- Use inside diameter and outside diameter together when confirming fitment.
- Thickness selection should reflect the required correction, load, vibration, and installation method.
- Where exact combinations are not available off the shelf, layered shim solutions or custom-cut components may be required.
Frequently Asked Questions
What is DIN 988?
DIN 988 is a German standard covering shim washers and supporting rings used for precision spacing and axial adjustment in mechanical assemblies.
Does every DIN 988 washer size come in every thickness?
No. The standard defines the size system and thickness values, but not every thickness is commercially available for every washer size. Stock ranges vary by manufacturer and supplier.
How are DIN 988 shim washers measured?
DIN 988 shim washers are described by inside diameter (d1), outside diameter (d2), and thickness (h).
What are DIN 988 shim washers used for?
They are used for precision spacing, end float adjustment, alignment correction, and tolerance compensation in machinery and engineering assemblies.
Where can I buy DIN 988 shim washers?
You can view our current DIN 988 shim washer range on the linked collection page. For non-standard requirements, custom shim solutions may also be considered.
Last updated: 2026. This page is maintained as a reference guide to DIN 988 shim washer dimensions.
