# Shim rings, DIN 988: 3×6 to 50×63 bore and outside diameter, standard thicknesses

> What bore and outside diameter sizes and thicknesses does a DIN 988 shim ring come in?

- Category: Hardware › Fasteners
- Kind: Standard part
- Basis: Westfield Fasteners' DIN 988 tables (nominal d1/d2 and standard thicknesses), cross-checked against Würth and Böllhoff DIN 988 listings (e.g. 12×18, 60×75)
- Page: https://xemstudio.com/objects/shim-rings-din-988/ · JSON: https://xemstudio.com/api/geometry?object=shim-rings-din-988 · Plain text: https://xemstudio.com/objects/shim-rings-din-988/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

- Columns: bore d1, outside diameter d2. Standard thicknesses: 0.1, 0.15, 0.2, 0.3, 0.5, 1.0, 1.1 to 2.0 in 0.1 steps.
- Files drawn at s = 1.0 for every bore up to 50 mm; other thicknesses change s only. Larger sizes (52×65 to 170×200) are in the standard but not drawn here.

## 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: 3 to 50 | shaft of nominal d1 | designed | all |
| outside | d2: 6 to 63; 12 × 18 | housing shoulder or bearing face | designed | all |

## Sizes

| d1 | d2 |
|---|---|
| 3 | 6 |
| 4 | 8 |
| 5 | 10 |
| 6 | 12 |
| 7 | 13 |
| 8 | 14 |
| 9 | 15 |
| 10 | 16 |
| 11 | 17 |
| 12 | 18 |
| 13 | 19 |
| 14 | 20 |
| 15 | 21 |
| 16 | 22 |
| 17 | 24 |
| 18 | 25 |
| 19 | 26 |
| 20 | 28 |
| 22 | 30 |
| 22 | 32 |
| 25 | 35 |
| 25 | 36 |
| 26 | 37 |
| 28 | 40 |
| 30 | 42 |
| 32 | 45 |
| 35 | 45 |
| 36 | 45 |
| 37 | 47 |
| 40 | 50 |
| 42 | 52 |
| 45 | 55 |
| 45 | 56 |
| 48 | 60 |
| 50 | 62 |
| 50 | 63 |

## Where the files are

- Westfield Fasteners: [DIN 988 shim washers: nominal d1/d2 and standard thicknesses](https://www.westfieldfasteners.co.uk/Standards/Washer-ShimDIN988-M.html) — web — Publisher's page; dimensions are facts
- Böllhoff: [DIN 988 shim rings, steel, data sheet](https://eshop-hu.boellhoff.com/out/media/pdf/DIN_988_Stahl___en.pdf) — web — Publisher's page; dimensions are facts

## Free STEP/STL (36 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/shim-rings-din-988/index.json

- din988-3x6x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-3x6x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-3x6x1.stl) — DIN 988 3×6×1.0
- din988-4x8x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-4x8x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-4x8x1.stl) — DIN 988 4×8×1.0
- din988-5x10x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-5x10x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-5x10x1.stl) — DIN 988 5×10×1.0
- din988-6x12x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-6x12x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-6x12x1.stl) — DIN 988 6×12×1.0
- din988-7x13x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-7x13x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-7x13x1.stl) — DIN 988 7×13×1.0
- din988-8x14x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-8x14x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-8x14x1.stl) — DIN 988 8×14×1.0
- din988-9x15x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-9x15x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-9x15x1.stl) — DIN 988 9×15×1.0
- din988-10x16x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-10x16x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-10x16x1.stl) — DIN 988 10×16×1.0
- din988-11x17x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-11x17x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-11x17x1.stl) — DIN 988 11×17×1.0
- din988-12x18x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-12x18x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-12x18x1.stl) — DIN 988 12×18×1.0
- din988-13x19x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-13x19x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-13x19x1.stl) — DIN 988 13×19×1.0
- din988-14x20x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-14x20x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-14x20x1.stl) — DIN 988 14×20×1.0
- din988-15x21x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-15x21x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-15x21x1.stl) — DIN 988 15×21×1.0
- din988-16x22x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-16x22x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-16x22x1.stl) — DIN 988 16×22×1.0
- din988-17x24x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-17x24x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-17x24x1.stl) — DIN 988 17×24×1.0
- din988-18x25x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-18x25x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-18x25x1.stl) — DIN 988 18×25×1.0
- din988-19x26x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-19x26x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-19x26x1.stl) — DIN 988 19×26×1.0
- din988-20x28x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-20x28x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-20x28x1.stl) — DIN 988 20×28×1.0
- din988-22x30x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-22x30x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-22x30x1.stl) — DIN 988 22×30×1.0
- din988-22x32x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-22x32x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-22x32x1.stl) — DIN 988 22×32×1.0
- din988-25x35x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-25x35x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-25x35x1.stl) — DIN 988 25×35×1.0
- din988-25x36x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-25x36x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-25x36x1.stl) — DIN 988 25×36×1.0
- din988-26x37x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-26x37x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-26x37x1.stl) — DIN 988 26×37×1.0
- din988-28x40x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-28x40x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-28x40x1.stl) — DIN 988 28×40×1.0
- din988-30x42x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-30x42x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-30x42x1.stl) — DIN 988 30×42×1.0
- din988-32x45x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-32x45x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-32x45x1.stl) — DIN 988 32×45×1.0
- din988-35x45x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-35x45x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-35x45x1.stl) — DIN 988 35×45×1.0
- din988-36x45x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-36x45x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-36x45x1.stl) — DIN 988 36×45×1.0
- din988-37x47x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-37x47x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-37x47x1.stl) — DIN 988 37×47×1.0
- din988-40x50x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-40x50x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-40x50x1.stl) — DIN 988 40×50×1.0
- din988-42x52x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-42x52x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-42x52x1.stl) — DIN 988 42×52×1.0
- din988-45x55x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-45x55x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-45x55x1.stl) — DIN 988 45×55×1.0
- din988-45x56x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-45x56x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-45x56x1.stl) — DIN 988 45×56×1.0
- din988-48x60x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-48x60x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-48x60x1.stl) — DIN 988 48×60×1.0
- din988-50x62x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-50x62x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-50x62x1.stl) — DIN 988 50×62×1.0
- din988-50x63x1: [STEP](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-50x63x1.step) · [STL](https://xemstudio.com/files/hardware/shim-rings-din-988/din988-50x63x1.stl) — DIN 988 50×63×1.0

## Questions

**What thicknesses do DIN 988 shims come in?**

0.1, 0.15, 0.2, 0.3, 0.5 and 1.0 mm, then 1.1 to 2.0 mm in 0.1 mm steps.

**What is the outside diameter of a 12 mm shim ring?**

DIN 988 12 × 18: 12 mm bore, 18 mm outside.

## Fits with

- [Retaining rings DIN 471 (external, for shafts): ring dimensions and groove diameter d2 × width m, 3 to 100 mm](https://xemstudio.com/objects/retaining-rings-din-471-external/)
- [608 ball bearing](https://xemstudio.com/objects/608-bearing/)
- [Flat washers, M2–M8 (ISO 7089)](https://xemstudio.com/objects/flat-washers-metric/)