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Snap Ring (Shaft) Spec Table
Snap Ring (Shaft) Specifications — 46 sizes
DIN 471
This specification follows DIN (Deutsches Institut für Normung, German Industrial Standard). It is essential when maintaining German or European-sourced equipment and when supplying to the European market.
A C-type circlip that fits in a shaft groove to prevent axial movement of components. Secures bearings, gears, and pulleys in the axial direction; easily installed/removed with snap ring pliers.
Practical Notes
- Use dedicated external snap ring pliers. General pliers deform the ring, reducing retention.
- Verify groove depth and chamfer. Shallow grooves cause ring ejection; missing chamfers make insertion difficult.
DINSnap Ring (Shaft)
46 sizes| Nom. d1 | Groove d2 | Free ID d3 | Mount d4 | Width b | Thick. t | Groove m | Margin n | Material | Standard |
|---|---|---|---|---|---|---|---|---|---|
| 8 | 7.6 | 7.4 | 14.7 | 1.5 | 0.8 | 0.9 | 0.6 | Spring Steel | DIN 471 |
| 9 | 8.6 | 8.4 | 15.9 | 1.7 | 1 | 1.1 | 0.6 | Spring Steel | DIN 471 |
| 10 | 9.6 | 9.3 | 16.9 | 1.8 | 1 | 1.1 | 0.6 | Spring Steel | DIN 471 |
| 11 | 10.5 | 10.2 | 17.9 | 1.8 | 1 | 1.1 | 0.8 | Spring Steel | DIN 471 |
| 12 | 11.5 | 11 | 18.9 | 1.8 | 1 | 1.1 | 0.8 | Spring Steel | DIN 471 |
| 13 | 12.4 | 11.9 | 20.1 | 2 | 1 | 1.1 | 0.9 | Spring Steel | DIN 471 |
| 14 | 13.4 | 12.9 | 21.4 | 2.1 | 1 | 1.1 | 0.9 | Spring Steel | DIN 471 |
| 15 | 14.3 | 13.8 | 22.6 | 2.2 | 1 | 1.1 | 1.1 | Spring Steel | DIN 471 |
| 16 | 15.2 | 14.7 | 23.8 | 2.2 | 1 | 1.1 | 1.2 | Spring Steel | DIN 471 |
| 17 | 16.2 | 15.7 | 25 | 2.3 | 1 | 1.1 | 1.2 | Spring Steel | DIN 471 |
| 18 | 17 | 16.5 | 26.2 | 2.4 | 1.2 | 1.3 | 1.5 | Spring Steel | DIN 471 |
| 19 | 18 | 17.5 | 27.2 | 2.5 | 1.2 | 1.3 | 1.5 | Spring Steel | DIN 471 |
| 20 | 19 | 18.5 | 28.4 | 2.6 | 1.2 | 1.3 | 1.5 | Spring Steel | DIN 471 |
| 21 | 20 | 19.5 | 29.6 | 2.7 | 1.2 | 1.3 | 1.5 | Spring Steel | DIN 471 |
| 22 | 21 | 20.5 | 30.8 | 2.8 | 1.2 | 1.3 | 1.5 | Spring Steel | DIN 471 |
| 24 | 22.9 | 22.2 | 33.2 | 3 | 1.2 | 1.3 | 1.7 | Spring Steel | DIN 471 |
| 25 | 23.9 | 23.2 | 34.2 | 3 | 1.2 | 1.3 | 1.7 | Spring Steel | DIN 471 |
| 26 | 24.9 | 24.2 | 35.5 | 3.1 | 1.2 | 1.3 | 1.7 | Spring Steel | DIN 471 |
| 28 | 26.6 | 25.9 | 37.9 | 3.2 | 1.5 | 1.6 | 2.1 | Spring Steel | DIN 471 |
| 30 | 28.6 | 27.9 | 40.5 | 3.5 | 1.5 | 1.6 | 2.1 | Spring Steel | DIN 471 |
| 32 | 30.3 | 29.6 | 42.9 | 3.6 | 1.5 | 1.6 | 2.6 | Spring Steel | DIN 471 |
| 34 | 32.3 | 31.5 | 45.3 | 3.8 | 1.5 | 1.6 | 2.6 | Spring Steel | DIN 471 |
| 35 | 33 | 32.2 | 46.8 | 3.9 | 1.5 | 1.6 | 3 | Spring Steel | DIN 471 |
| 36 | 34 | 33.2 | 47.8 | 4 | 1.75 | 1.85 | 3 | Spring Steel | DIN 471 |
| 38 | 36 | 35.2 | 50.2 | 4.2 | 1.75 | 1.85 | 3 | Spring Steel | DIN 471 |
| 40 | 37.5 | 36.5 | 52.6 | 4.4 | 1.75 | 1.85 | 3.8 | Spring Steel | DIN 471 |
| 42 | 39.5 | 38.5 | 55.7 | 4.5 | 1.75 | 1.85 | 3.8 | Spring Steel | DIN 471 |
| 45 | 42.5 | 41.5 | 59.1 | 4.7 | 1.75 | 1.85 | 3.8 | Spring Steel | DIN 471 |
| 48 | 45.5 | 44.5 | 62.5 | 5 | 2 | 1.85 | 3.8 | Spring Steel | DIN 471 |
| 50 | 47 | 45.8 | 64.5 | 5.1 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 52 | 49 | 47.8 | 66.7 | 5.2 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 55 | 52 | 50.8 | 70.1 | 5.4 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 56 | 53 | 51.8 | 71.3 | 5.5 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 60 | 57 | 55.8 | 75.5 | 5.8 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 62 | 59 | 57.8 | 77.8 | 6 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 63 | 60 | 58.8 | 79 | 6.2 | 2 | 2.15 | 4.5 | Spring Steel | DIN 471 |
| 65 | 62 | 60.8 | 81.4 | 6.3 | 2.5 | 2.65 | 4.5 | Spring Steel | DIN 471 |
| 68 | 65 | 63.5 | 84.8 | 6.2 | 2.5 | 2.65 | 4.5 | Spring Steel | DIN 471 |
| 70 | 67 | 65.5 | 87 | 6.6 | 2.5 | 2.65 | 4.5 | Spring Steel | DIN 471 |
| 72 | 69 | 67.5 | 89.2 | 6.8 | 2.5 | 2.65 | 4.5 | Spring Steel | DIN 471 |
| 75 | 72 | 70.5 | 92.6 | 7 | 2.5 | 2.65 | 4.5 | Spring Steel | DIN 471 |
| 80 | 76.5 | 74.5 | 98.1 | 7.4 | 2.5 | 2.65 | 5.3 | Spring Steel | DIN 471 |
| 85 | 81.5 | 79.5 | 103.3 | 7.8 | 3 | 3.15 | 5.3 | Spring Steel | DIN 471 |
| 90 | 86.5 | 84.5 | 108.5 | 8.2 | 3 | 3.15 | 5.3 | Spring Steel | DIN 471 |
| 95 | 91.5 | 89.5 | 114.7 | 8.6 | 3 | 3.15 | 5.3 | Spring Steel | DIN 471 |
| 100 | 96.5 | 94.5 | 120.2 | 9 | 3 | 3.15 | 5.3 | Spring Steel | DIN 471 |
Key Features
- C-type retaining ring seated in shaft groove to prevent axial displacement of components
- Installed and removed with dedicated snap ring pliers; reusable multiple times
- KS B 1336 / DIN 471 / ISO 5425; covers shaft diameters 8–100 mm
Key Applications
Gearbox bearing retention, motor shaft part positioning, reducer internal assembly, sprocket/pulley retention
FAQ
Difference between DIN 471 and JIS B 2804?
Dimensions are nearly identical but may have slight thickness/groove depth differences. Always compare detailed dimensions when cross-referencing.