Thin Spacer Washer (Shim)
Thin precision shim washer with bore for fine clearance adjustment.
This is a dimension schematic, not a manufacturing drawing. Dimensions match the catalog data; request a quote with the part code to confirm before production.
Code & Size Table
Code, dimensions and tolerance for all 9 variants.
| Code | Diameter (mm) | Length (mm) | Feature | Tolerance | Std |
|---|---|---|---|---|---|
| ARAT-THN-05 | 5 | 1 | ⌀3.2 | h8 · ⌀5: 0/−0.018 | ⌀3.2 bore, t=1 |
| ARAT-THN-06 | 6 | 1 | ⌀3.2 | h8 · ⌀6: 0/−0.018 | ⌀3.2 bore, t=1 |
| ARAT-THN-08 | 8 | 1.5 | ⌀4.3 | h8 · ⌀8: 0/−0.022 | ⌀4.3 bore, t=1.5 |
| ARAT-THN-10 | 10 | 1.5 | ⌀5.3 | h8 · ⌀10: 0/−0.022 | ⌀5.3 bore, t=1.5 |
| ARAT-THN-12 | 12 | 2 | ⌀6.4 | h8 · ⌀12: 0/−0.027 | ⌀6.4 bore, t=2 |
| ARAT-THN-14 | 14 | 2 | ⌀6.4 | h8 · ⌀14: 0/−0.027 | ⌀6.4 bore, t=2 |
| ARAT-THN-16 | 16 | 2.5 | ⌀8.4 | h8 · ⌀16: 0/−0.027 | ⌀8.4 bore, t=2.5 |
| ARAT-THN-18 | 18 | 2.5 | ⌀8.4 | h8 · ⌀18: 0/−0.027 | ⌀8.4 bore, t=2.5 |
| ARAT-THN-20 | 20 | 3 | ⌀10.5 | h8 · ⌀20: 0/−0.033 | ⌀10.5 bore, t=3 |
Prices are for approved members.
Material & Tolerance
The standard material is listed below; also available in steel, stainless, brass and aluminium. Dimensions in mm; tolerances machined to ISO. Deviations (mm) are given for the nominal diameter according to the ISO 286-2 tables; thread tolerances (6g/6H) are to ISO 965. For custom sizes/tolerances, contact us with the part code.
Manufacturing Scope
Thin Spacer Washer (Shim) is a Spacers & Standoffs family precision-turned on a Goodway SW-20, covering 9 variants — diameters ⌀5–20 mm, lengths 1–3 mm, standard material Stainless Steel (also steel, brass or aluminium). Every variant's part code, dimension and tolerance is listed below; request a quote with the code you need.
The family is machined from ⌀20 mm bar stock; its longest variant is ARAT-THN-20 at 3 mm. The family is produced by turning alone. Bores in this family run ⌀3.2–10.5 mm. All of it is completed in a single setup, without the part leaving the machine.
The variant with the highest length-to-diameter ratio is ARAT-THN-05: 1 mm long at ⌀5 mm, L/D 0.2. A short, rigid body: what governs the result here is not deflection but diameter tolerance and surface finish.
Variants are machined to h8 tolerance; the smallest is ARAT-THN-05 (⌀5 mm) and the largest ARAT-THN-20 (⌀20 mm). The family includes bored variants. Custom sizes, tolerances or materials are produced to the part code on request.
Need a size that isn't listed? We machine to your drawing — CNC contract machining. How these parts are made: What is a Swiss-type lathe?
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