Shim rings, DIN 988: 3×6 to 50×63 bore and outside diameter, standard thicknesses — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/shim-rings-din-988/  (sheet CC BY 4.0)
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)
Catalog version: 2026-10-20

Sizes: see table below
- 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.

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

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Westfield Fasteners: DIN 988 shim washers: nominal d1/d2 and standard thicknesses — web — Publisher's page; dimensions are facts — https://www.westfieldfasteners.co.uk/Standards/Washer-ShimDIN988-M.html
- Böllhoff: DIN 988 shim rings, steel, data sheet — web — Publisher's page; dimensions are facts — https://eshop-hu.boellhoff.com/out/media/pdf/DIN_988_Stahl___en.pdf

Free files (CC BY 4.0, Xem Studio; STEP + STL, 36 parts): https://xemstudio.com/files/hardware/shim-rings-din-988/index.json
API: https://xemstudio.com/api/geometry?object=shim-rings-din-988