E-clips DIN 6799 for Ø2 to Ø10 shafts — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/e-clips-din-6799/  (CC BY 4.0)
Basis: DIN 6799 retaining washers: groove Ø and width per shaft Ø; clip thickness per the standard
Catalog version: 2026-10-20

Sizes: see table below
- An open E-shaped washer that snaps sideways into a shaft groove. The clip bore is the groove Ø; its OD is 2.2 × the shaft Ø and the opening is 0.9 × the groove Ø wide.
- Groove Ø × width (clip thickness) by shaft: 2 → 1.4 × 0.4 (0.4); 3 → 2.3 × 0.5 (0.5); 4 → 3.2 × 0.7 (0.6); 5 → 4.0 × 0.7 (0.6); 6 → 5.0 × 0.7 (0.7); 8 → 6.0 × 0.9 (0.8); 10 → 8.0 × 1.1 (1.0).
- The groove itself is drawn on shaft-5x80-grooved (Ø4.0 × 0.7).

file  shaft Ø  groove Ø  groove width  clip thickness  clip OD
eclip-2mm  2  1.4  0.4  0.4  4.4
eclip-3mm  3  2.3  0.5  0.5  6.6
eclip-4mm  4  3.2  0.7  0.6  8.8
eclip-5mm  5  4.0  0.7  0.6  11.0
eclip-6mm  6  5.0  0.7  0.7  13.2
eclip-8mm  8  6.0  0.9  0.8  17.6
eclip-10mm  10  8.0  1.1  1.0  22.0

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Wikipedia: Circlip — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Circlip
- Wikipedia: Retaining ring — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Retaining_ring
- McMaster-Carr: Shaft collars (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/shaft-collars/
- McMaster-Carr: Retaining rings (free STEP per part, for your own design use; no redistribution) — STEP, PDF — McMaster-Carr site terms [verify license at link] — https://www.mcmaster.com/products/retaining-rings/
- Long Earth Society: Engine and rig builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 7 parts): https://xemstudio.com/files/hardware/e-clips-din-6799/index.json
API: https://xemstudio.com/api/geometry?object=e-clips-din-6799