# Shafts, D-flats, set-screw collars, E-clips (DIN 6799) and circlips (DIN 471) > What groove does an E-clip for a 5 mm shaft need? - Category: Hardware › Motion - Kind: Hardware - Basis: DIN 6799 E-clip and DIN 471 circlip groove dimensions; set-screw collar envelopes typical of metric catalogue parts; h6 precision rod - Page: https://xemstudio.com/objects/shaft-collars-clips-and-shafts/ · JSON: https://xemstudio.com/api/geometry?object=shaft-collars-clips-and-shafts · Plain text: https://xemstudio.com/objects/shaft-collars-clips-and-shafts/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses ## Notes - E-clip grooves (DIN 6799), shaft → groove Ø × width: 2 → 1.4 × 0.4; 3 → 2.3 × 0.5; 4 → 3.2 × 0.7; 5 → 4.0 × 0.7; 6 → 5.0 × 0.7; 8 → 6.0 × 0.9; 10 → 8.0 × 1.1 mm. Circlip grooves (DIN 471): 5 → 4.8 × 0.7; 6 → 5.7 × 0.8; 8 → 7.6 × 0.9; 10 → 9.6 × 1.1; 12 → 11.5 × 1.1; 15 → 14.3 × 1.1; 20 → 19.0 × 1.3 mm. - Set-screw collars: Ø3 bore 8 OD × 5; Ø5 10 × 6; Ø6 12 × 7; Ø8 16 × 8; Ø10 20 × 10; Ø12 22 × 10 (M3/M4/M5 screws). A collar each side of a bearing locates a shaft axially; a printed collar in PETG with an M3 holds a 5 mm shaft for light duty. - D-flat: 0.4 × d deep (5 mm shaft → 2 mm flat, leaving 3 mm), 20 mm long; a set screw seats on it. Precision rod is h6 (5 mm: 5.000/4.992); a printed Ø5.2 hole is a running fit, Ø4.9 press. - LES: Ø8 flywheel shafts in 608s with circlip grooves; Ø5 crank shafts in 625s with E-clips; collars where a clip groove is too much work. ## Sizes | item | shaft_mm | groove_dia_mm | groove_w_mm | collar_od_x_w | |---|---|---|---|---| | E-clip | 2 | 1.4 | 0.4 | | | E-clip | 3 | 2.3 | 0.5 | | | E-clip | 4 | 3.2 | 0.7 | | | E-clip | 5 | 4.0 | 0.7 | | | E-clip | 6 | 5.0 | 0.7 | | | E-clip | 8 | 6.0 | 0.9 | | | E-clip | 10 | 8.0 | 1.1 | | | circlip | 4 | 3.8 | 0.5 | | | circlip | 5 | 4.8 | 0.7 | | | circlip | 6 | 5.7 | 0.8 | | | circlip | 8 | 7.6 | 0.9 | | | circlip | 10 | 9.6 | 1.1 | | | circlip | 12 | 11.5 | 1.1 | | | circlip | 15 | 14.3 | 1.1 | | | circlip | 20 | 19.0 | 1.3 | | | collar | 3 | | | 8 × 5, M3 | | collar | 4 | | | 9 × 5, M3 | | collar | 5 | | | 10 × 6, M3 | | collar | 6 | | | 12 × 7, M3 | | collar | 8 | | | 16 × 8, M4 | | collar | 10 | | | 20 × 10, M4 | | collar | 12 | | | 22 × 10, M5 | ## 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 (32 parts, CC BY 4.0, Xem Studio) Index: https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/index.json - collar-3mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-3mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-3mm.stl) — set-screw shaft collar Ø3 bore, OD 8, 5 wide, M3 - collar-4mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-4mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-4mm.stl) — set-screw shaft collar Ø4 bore, OD 9, 5 wide, M3 - collar-5mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-5mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-5mm.stl) — set-screw shaft collar Ø5 bore, OD 10, 6 wide, M3 - collar-6mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-6mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-6mm.stl) — set-screw shaft collar Ø6 bore, OD 12, 7 wide, M3 - collar-8mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-8mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-8mm.stl) — set-screw shaft collar Ø8 bore, OD 16, 8 wide, M4 - collar-10mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-10mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-10mm.stl) — set-screw shaft collar Ø10 bore, OD 20, 10 wide, M4 - collar-12mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-12mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/collar-12mm.stl) — set-screw shaft collar Ø12 bore, OD 22, 10 wide, M5 - eclip-2mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-2mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-2mm.stl) — DIN 6799 E-clip for Ø2 shaft: groove Ø1.4 × 0.4 wide - eclip-3mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-3mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-3mm.stl) — DIN 6799 E-clip for Ø3 shaft: groove Ø2.3 × 0.5 wide - eclip-4mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-4mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-4mm.stl) — DIN 6799 E-clip for Ø4 shaft: groove Ø3.2 × 0.7 wide - eclip-5mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-5mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-5mm.stl) — DIN 6799 E-clip for Ø5 shaft: groove Ø4.0 × 0.7 wide - eclip-6mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-6mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-6mm.stl) — DIN 6799 E-clip for Ø6 shaft: groove Ø5.0 × 0.7 wide - eclip-8mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-8mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-8mm.stl) — DIN 6799 E-clip for Ø8 shaft: groove Ø6.0 × 0.9 wide - eclip-10mm: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-10mm.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/eclip-10mm.stl) — DIN 6799 E-clip for Ø10 shaft: groove Ø8.0 × 1.1 wide - 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 - shaft-3x100: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-3x100.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-3x100.stl) — precision shaft Ø3 × 100 - shaft-4x100: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-4x100.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-4x100.stl) — precision shaft Ø4 × 100 - shaft-5x100: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x100.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x100.stl) — precision shaft Ø5 × 100 with 20 mm D-flat (0.4 d deep) - shaft-5x200: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x200.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x200.stl) — precision shaft Ø5 × 200 with 20 mm D-flat (0.4 d deep) - shaft-6x150: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-6x150.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-6x150.stl) — precision shaft Ø6 × 150 with 20 mm D-flat (0.4 d deep) - shaft-8x200: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x200.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x200.stl) — precision shaft Ø8 × 200 with 20 mm D-flat (0.4 d deep) - shaft-8x300: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x300.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x300.stl) — precision shaft Ø8 × 300 with 20 mm D-flat (0.4 d deep) - shaft-10x200: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-10x200.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-10x200.stl) — precision shaft Ø10 × 200 - shaft-8x100-grooved: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x100-grooved.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-8x100-grooved.stl) — Ø8 × 100 with DIN 471 circlip grooves at 10 and 88 mm and a D-flat - shaft-5x80-grooved: [STEP](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x80-grooved.step) · [STL](https://xemstudio.com/files/hardware/shaft-collars-clips-and-shafts/shaft-5x80-grooved.stl) — Ø5 × 80 with DIN 6799 E-clip grooves at 8 and 70 mm and a D-flat ## Questions **What groove size for an E-clip on a 5 mm shaft?** Ø4.0 mm groove, 0.7 mm wide (DIN 6799 size 4). For a 3 mm shaft: Ø2.3 × 0.5; 8 mm: Ø6.0 × 0.9. **What is the circlip groove for an 8 mm shaft?** DIN 471: Ø7.6 mm, 0.9 mm wide; the clip is 0.8 mm thick. 10 mm shaft: Ø9.6 × 1.1. **How deep is a D-flat on a 5 mm shaft?** Usually 0.4 × d = 2 mm deep (3 mm remaining), 15–25 mm long; set screws seat on it so the pulley can't spin. **What size shaft collar for an 8 mm shaft?** 16 mm OD, 8 mm wide, M4 set screw (typical metric catalogue size); the 5 mm collar is 10 × 6 with an M3. ## Fits with - [Ball bearings, 683 to 6210 and flanged F6xx (ISO 15)](https://xemstudio.com/objects/ball-bearings-metric/) - [608 ball bearing](https://xemstudio.com/objects/608-bearing/) - [Set screws (grub screws), M3–M8 (ISO 4026)](https://xemstudio.com/objects/set-screws-metric/) - [Bearing housings and linear supports: KP08, KFL08, SK8, SC8UU, V-wheels, sleeve bushings](https://xemstudio.com/objects/bearing-housings-and-rod-supports/) - [Crank discs, connecting rods and flywheels for model engines](https://xemstudio.com/objects/crank-conrod-flywheel-kit/) - [Dowel pins, 2–6 mm (ISO 2338 / DIN 6325)](https://xemstudio.com/objects/dowel-pins-metric/)