PARAMETRIC · 3D · STEP / STL / 3MF
Plain Washer M3 · 3.2×7×0.5PLAIN WASHER
Free STEP, STL and 3MF download of a plain washer M3 · 3.2×7×0.5 with live 3D preview. Key dimensions: Inside diameter 3.2 mm, Outside diameter 7.0 mm, Thickness 0.5 mm, Volume 15.2 mm³. Every parameter stays adjustable, and you can send it straight to Orinovate for printing.
- StandardISO 7089 / 7093
- SizesM2–M16
- OutputSTEP · STL · 3MF · DXF
LIVE · PLAIN WASHER
M3 · 3.2×7×0.5
SCALE 1:1 · mm
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CALCULATED · SPEC
AUTO-COMPUTED
d1
3.2mm
Inside diameter
d2
7.0mm
Outside diameter
h
0.5mm
Thickness
V
15.2mm³
Volume
m
0.12g
Mass (steel)
HOW-TO
How to generate a plain washer STEP / STL file
- 1Pick the screw size.
- 2Pick the normal or large series.
- 3Check the spec cards and any warnings.
- 4Download STEP, STL or 3MF — or send it to Orinovate for a quote.
What is a plain washer (ISO 7089 / ISO 7093)?
A plain washer sits under a screw head or nut to enlarge the bearing area, protect the surface and bridge clearance-hole tolerance. ISO 7089 normal series is about 2d outside (200 HV), ISO 7093-1 large series about 3d for soft materials and slots. The hole d1 matches the ISO 273 medium clearance hole.
Dimensions and mass
Volume V = π/4 × (d2² − d1²) × h; mass uses steel at 7.85 g/cm³. An M8 normal washer 8.4 × 16 × 1.6 mm has V ≈ 233 mm³, about 1.83 g.
Specs at default parameters
| Parameter | Value | Range |
|---|---|---|
| Screw size (d) | M3 | M2 / M2.5 / M3 / M4 / M5 / M6 / M8 / M10 / M12 / M14 / M16 |
| Series | Normal ISO 7089 | Normal ISO 7089 / Large ISO 7093 |
| Inside diameter (d1) | 3.2 mm | — |
| Outside diameter (d2) | 7.0 mm | — |
| Thickness (h) | 0.5 mm | — |
| Volume (V) | 15.2 mm³ | — |
| Mass (steel) (m) | 0.12 g | — |
Popular plain washer sizes
FAQ
What size is an M6 washer?
ISO 7089 M6: 6.4 mm inside, 12 mm outside, 1.6 mm thick; ISO 7093 large M6: 6.4 × 18 × 1.6 mm. Others: M3 3.2 × 7 × 0.5, M4 4.3 × 9 × 0.8, M5 5.3 × 10 × 1, M8 8.4 × 16 × 1.6 mm.
When do I need a washer?
Use one on soft materials (aluminium, plastics, wood), over oversized or slotted holes, or to protect a finish — it spreads the clamp load. Split lock washers do little against loosening; use nyloc nuts, threadlocker or wedge-lock washers instead.
ISO 7089 vs ISO 7090 vs DIN 125?
ISO 7089 is the plain washer without chamfer; ISO 7090 has the same size with a chamfered edge; DIN 125-A is practically identical to ISO 7089 and interchangeable. This generator makes the ISO 7089 version.
Can I 3D print washers?
As spacers or shims, yes. Under clamp load plastic creeps and thins out, so printed washers don't replace steel ones. If you print them, use ≥ 1 mm thickness and 100 % infill.
Which software opens the plain washer STEP file?
STEP (AP214) opens in Fusion 360, SolidWorks, FreeCAD, Onshape and Rhino. STL / 3MF import directly into Bambu Studio, PrusaSlicer or Cura.
Is it free?
Yes — no sign-up, no fees. Need a physical part? Send it to Orinovate for an instant quote in FDM, SLA, SLS, MJF or CNC.
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Need a physical part?
Send the model straight to Orinovate's instant quote: FDM, SLA, SLS, MJF, metal printing and CNC, made in Hsinchu, Taiwan.
About STEP / STL / 3MF / DXF
- STEP (.step / .stp, AP214) keeps exact dimensions and surfaces for editing in Fusion 360, SolidWorks or FreeCAD.
- STL and 3MF are triangle meshes that import directly into Bambu Studio, PrusaSlicer or Cura.
- DXF is the top-view 2D outline, ready for laser cutting, waterjet or CNC routing.
- All models are in millimetres at true scale.