# External circlips DIN 471 for Ø4 to Ø20 shafts

> What is the circlip groove for an 8 mm shaft?

- Category: Hardware › Motion
- Kind: Hardware
- Basis: DIN 471 external retaining rings: groove Ø and width per shaft Ø; ring thickness per the standard
- Page: https://xemstudio.com/objects/circlips-din-471/ · JSON: https://xemstudio.com/api/geometry?object=circlips-din-471 · Plain text: https://xemstudio.com/objects/circlips-din-471/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**Exact dimensions.** Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part.

## Notes

- An open ring that springs into a shaft groove, with two lugs (Ø3.2, Ø1.4 holes) either side of the gap. The ring bore is the groove Ø; its OD is 1.9 × the shaft Ø and the gap is 0.35 × the groove Ø.
- Groove Ø × width (ring thickness) by shaft: 4 → 3.8 × 0.5 (0.4); 5 → 4.8 × 0.7 (0.6); 6 → 5.7 × 0.8 (0.7); 8 → 7.6 × 0.9 (0.8); 10 → 9.6 × 1.1 (1.0); 12 → 11.5 × 1.1 (1.0); 15 → 14.3 × 1.1 (1.0); 20 → 19.0 × 1.3 (1.2).
- The groove itself is drawn on shaft-8x100-grooved (Ø7.6 × 0.9).

## 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 |
|---|---|---|---|---|
| circlip bore | groove Ø (DIN 471) | shaft groove | designed | circlip-* |

## Sizes

| file | shaft Ø | groove Ø | groove width | ring thickness | ring OD |
|---|---|---|---|---|---|
| circlip-4mm | 4 | 3.8 | 0.5 | 0.4 | 7.6 |
| circlip-5mm | 5 | 4.8 | 0.7 | 0.6 | 9.5 |
| circlip-6mm | 6 | 5.7 | 0.8 | 0.7 | 11.4 |
| circlip-8mm | 8 | 7.6 | 0.9 | 0.8 | 15.2 |
| circlip-10mm | 10 | 9.6 | 1.1 | 1.0 | 19.0 |
| circlip-12mm | 12 | 11.5 | 1.1 | 1.0 | 22.8 |
| circlip-15mm | 15 | 14.3 | 1.1 | 1.0 | 28.5 |
| circlip-20mm | 20 | 19.0 | 1.3 | 1.2 | 38.0 |

## Where the files are

- Wikipedia: [Circlip](https://en.wikipedia.org/wiki/Circlip) — web — CC BY-SA 4.0 (text)
- Wikipedia: [Retaining ring](https://en.wikipedia.org/wiki/Retaining_ring) — web — CC BY-SA 4.0 (text)
- McMaster-Carr: [Shaft collars (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/shaft-collars/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- McMaster-Carr: [Retaining rings (free STEP per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/retaining-rings/) — STEP, PDF — McMaster-Carr site terms (verify at link)
- Long Earth Society: [Engine and rig builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (8 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/circlips-din-471/index.json

- circlip-4mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-4mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-4mm.stl) — DIN 471 external circlip for Ø4 shaft: groove Ø3.8 × 0.5 wide
- circlip-5mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-5mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-5mm.stl) — DIN 471 external circlip for Ø5 shaft: groove Ø4.8 × 0.7 wide
- circlip-6mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-6mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-6mm.stl) — DIN 471 external circlip for Ø6 shaft: groove Ø5.7 × 0.8 wide
- circlip-8mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-8mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-8mm.stl) — DIN 471 external circlip for Ø8 shaft: groove Ø7.6 × 0.9 wide
- circlip-10mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-10mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-10mm.stl) — DIN 471 external circlip for Ø10 shaft: groove Ø9.6 × 1.1 wide
- circlip-12mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-12mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-12mm.stl) — DIN 471 external circlip for Ø12 shaft: groove Ø11.5 × 1.1 wide
- circlip-15mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-15mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-15mm.stl) — DIN 471 external circlip for Ø15 shaft: groove Ø14.3 × 1.1 wide
- circlip-20mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-20mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/circlip-20mm.stl) — DIN 471 external circlip for Ø20 shaft: groove Ø19.0 × 1.3 wide

## How it fits

### Goes in or on
- [Metric shafts Ø3 to Ø10 with D-flats and clip grooves](https://xemstudio.com/objects/metric-shafts/): groove on shaft-8x100-grooved (Ø7.6 × 0.9)

### Connects to
- [608 ball bearing](https://xemstudio.com/objects/608-bearing/): holds the 608 on the Ø8 shaft

### Alternatives
- [E-clips DIN 6799 for Ø2 to Ø10 shafts](https://xemstudio.com/objects/e-clips-din-6799/): side-fitting clip

## Questions

**What is the circlip groove for an 8 mm shaft?**

DIN 471: Ø7.6, 0.9 wide; the ring is 0.8 thick.

**What is the circlip groove for a 10 mm shaft?**

Ø9.6 × 1.1; ring 1.0 thick.

## Fits with

- [Metric shafts Ø3 to Ø10 with D-flats and clip grooves](https://xemstudio.com/objects/metric-shafts/)
- [E-clips DIN 6799 for Ø2 to Ø10 shafts](https://xemstudio.com/objects/e-clips-din-6799/)
- [Set-screw shaft collars Ø3 to Ø12](https://xemstudio.com/objects/shaft-collars/)
- [608 ball bearing](https://xemstudio.com/objects/608-bearing/)