DIN 471 External Circlips
3mm - 200.0mm
Spring steel
DIN 471 covers external circlips — sprung retaining rings that seat in a groove on a shaft to locate bearings and components axially. We supply external circlips for a wide range of shaft diameters.
Also known as: external retaining rings, shaft circlips, snap rings.
DIN 471 dimensions
| Shaft Diameter | Groove Diameter | Groove Width | Edge Margin (n) | Groove Depth | Circlip Thickness | Circlip Free Diameter | Clearance Diameter |
|---|---|---|---|---|---|---|---|
| 3 | 2.8 | 0.50 | 0.3 | 0.10 | 0.40 | 2.7 | 7.0 |
| 4 | 3.8 | 0.50 | 0.3 | 0.10 | 0.40 | 3.7 | 8.6 |
| 5 | 4.8 | 0.70 | 0.3 | 0.10 | 0.60 | 4.7 | 10.3 |
| 6 | 5.7 | 0.80 | 0.5 | 0.15 | 0.70 | 5.6 | 11.7 |
| 7 | 6.7 | 0.90 | 0.5 | 0.15 | 0.80 | 6.5 | 13.5 |
| 8 | 7.6 | 0.90 | 0.6 | 0.20 | 0.80 | 7.4 | 14.7 |
| 9 | 8.6 | 1.10 | 0.6 | 0.20 | 1.00 | 8.4 | 16.0 |
| 10 | 9.6 | 1.10 | 0.6 | 0.20 | 1.00 | 9.3 | 17.0 |
| 11 | 10.5 | 1.10 | 0.8 | 0.25 | 1.00 | 10.2 | 18.0 |
| 12 | 11.5 | 1.10 | 0.8 | 0.25 | 1.00 | 11.0 | 19.0 |
| 13 | 12.4 | 1.10 | 0.9 | 0.30 | 1.00 | 11.9 | 20.2 |
| 14 | 13.4 | 1.10 | 0.9 | 0.30 | 1.00 | 12.9 | 21.4 |
| 15 | 14.3 | 1.10 | 1.1 | 0.35 | 1.00 | 13.8 | 22.6 |
| 16 | 15.2 | 1.10 | 1.2 | 0.4 | 1.00 | 14.7 | 23.8 |
| 17 | 16.2 | 1.10 | 1.2 | 0.4 | 1.00 | 15.7 | 25.0 |
| 18 | 17.0 | 1.30 | 1.5 | 0.5 | 1.20 | 16.5 | 26.2 |
| 19 | 18.0 | 1.30 | 1.5 | 0.5 | 1.20 | 17.5 | 27.2 |
| 20 | 19.0 | 1.30 | 1.5 | 0.5 | 1.20 | 18.5 | 28.4 |
| 21 | 20.0 | 1.30 | 1.5 | 0.5 | 1.20 | 19.5 | 29.6 |
| 22 | 21.0 | 1.30 | 1.5 | 0.5 | 1.20 | 20.5 | 30.8 |
| 23 | 22.0 | 1.30 | 1.5 | 0.5 | 1.20 | 21.5 | 32.0 |
| 24 | 22.9 | 1.30 | 1.7 | 0.55 | 1.20 | 22.2 | 33.2 |
| 25 | 23.9 | 1.30 | 1.7 | 0.55 | 1.20 | 23.2 | 34.2 |
| 26 | 24.9 | 1.30 | 1.7 | 0.55 | 1.20 | 24.2 | 35.5 |
| 27 | 25.6 | 1.30 | 2.1 | 0.7 | 1.20 | 24.9 | 36.7 |
| 28 | 26.6 | 1.60 | 2.1 | 0.7 | 1.50 | 25.9 | 37.9 |
| 29 | 27.6 | 1.60 | 2.1 | 0.7 | 1.50 | 26.9 | 39.1 |
| 30.0 | 28.6 | 1.60 | 2.1 | 0.7 | 1.50 | 27.9 | 40.5 |
| 32.0 | 30.3 | 1.60 | 2.6 | 0.85 | 1.50 | 29.6 | 43.0 |
| 33.0 | 31.3 | 1.60 | 2.6 | 0.85 | 1.50 | 30.5 | 44.0 |
| 34.0 | 32.3 | 1.60 | 2.6 | 0.85 | 1.50 | 31.5 | 45.4 |
| 35.0 | 33.0 | 1.60 | 3.0 | 1.00 | 1.50 | 32.2 | 46.8 |
| 36.0 | 34.0 | 1.85 | 3.0 | 1.00 | 1.75 | 33.2 | 47.8 |
| 38.0 | 36.0 | 1.85 | 3.0 | 1.00 | 1.75 | 35.2 | 50.2 |
| 40.0 | 37.5 | 1.85 | 3.8 | 1.25 | 1.75 | 36.5 | 52.6 |
| 42.0 | 39.5 | 1.85 | 3.8 | 1.25 | 1.75 | 38.5 | 55.7 |
| 45.0 | 42.5 | 1.85 | 3.8 | 1.25 | 1.75 | 41.5 | 59.1 |
| 46.0 | 43.5 | 1.85 | 3.8 | 1.25 | 1.75 | 42.5 | 60.1 |
| 47.0 | 44.5 | 1.85 | 3.8 | 1.25 | 1.75 | 43.5 | 61.3 |
| 48.0 | 45.5 | 1.85 | 3.8 | 1.25 | 1.75 | 44.5 | 62.5 |
| 50 | 47.0 | 2.15 | 4.5 | 1.5 | 2.00 | 45.8 | 64.5 |
| 52 | 49.0 | 2.15 | 4.5 | 1.5 | 2.00 | 47.8 | 66.7 |
| 54 | 51.0 | 2.15 | 4.5 | 1.5 | 2.00 | 49.8 | 69.0 |
| 55 | 52.0 | 2.15 | 4.5 | 1.5 | 2.00 | 50.8 | 70.2 |
| 56 | 53.0 | 2.15 | 4.5 | 1.5 | 2.00 | 51.8 | 71.6 |
| 58 | 55.0 | 2.15 | 4.5 | 1.5 | 2.00 | 53.8 | 73.6 |
| 60 | 57.0 | 2.15 | 4.5 | 1.5 | 2.00 | 55.8 | 75.6 |
| 62 | 59.0 | 2.15 | 4.5 | 1.5 | 2.00 | 57.8 | 77.8 |
| 63 | 60.0 | 2.15 | 4.5 | 1.5 | 2.00 | 58.8 | 79.0 |
| 65 | 62.0 | 2.65 | 4.5 | 1.5 | 2.50 | 60.8 | 81.4 |
| 67 | 64.0 | 2.65 | 4.5 | 1.5 | 2.50 | 62.5 | 83.6 |
| 68 | 65.0 | 2.65 | 4.5 | 1.5 | 2.50 | 63.5 | 84.4 |
| 70 | 67.0 | 2.65 | 4.5 | 1.5 | 2.50 | 65.5 | 87.0 |
| 72 | 69.0 | 2.65 | 4.5 | 1.5 | 2.50 | 67.5 | 89.5 |
| 75 | 72.0 | 2.65 | 4.5 | 1.5 | 2.50 | 70.5 | 92.7 |
| 75 | 72.0 | 2.65 | 4.5 | 1.5 | 2.50 | 70.5 | 92.7 |
| 77.0 | 74.0 | 2.65 | 4.5 | 1.5 | 2.50 | 72.5 | 94.9 |
| 78.0 | 75.0 | 2.65 | 4.5 | 1.5 | 2.50 | 73.5 | 96.1 |
| 80.0 | 76.5 | 2.65 | 5.3 | 1.75 | 2.50 | 74.5 | 98.1 |
| 82.0 | 78.5 | 2.65 | 5.3 | 1.75 | 2.50 | 76.5 | 100.3 |
| 85.0 | 81.5 | 3.15 | 5.3 | 1.75 | 3.00 | 79.5 | 103.3 |
| 88.0 | 84.5 | 3.15 | 5.3 | 1.75 | 3.00 | 82.5 | 106.5 |
| 90.0 | 86.5 | 3.15 | 5.3 | 1.75 | 3.00 | 84.5 | 108.5 |
| 95.0 | 91.5 | 3.15 | 5.3 | 1.75 | 3.00 | 89.5 | 114.8 |
| 98.0 | 94.5 | 3.15 | 5.3 | 1.75 | 3.00 | 91.5 | 118.6 |
| 100.0 | 96.5 | 3.15 | 5.3 | 1.75 | 3.00 | 94.5 | 120.2 |
| 102.0 | 98.0 | 4.15 | 6.0 | 2.00 | 4.00 | 95.0 | 122.4 |
| 105.0 | 101.0 | 4.15 | 6.0 | 2.0 | 4.00 | 98.0 | 126.2 |
| 108.0 | 104.0 | 4.15 | 6.0 | 2.0 | 4.00 | 100.0 | 129.0 |
| 110.0 | 106.0 | 4.15 | 6.0 | 2.0 | 4.00 | 103.0 | 131.2 |
| 115.0 | 111.0 | 4.15 | 6.0 | 2.0 | 4.00 | 108.0 | 137.3 |
| 120.0 | 116.0 | 4.15 | 6.0 | 2.0 | 4.00 | 113.0 | 143.1 |
| 125.0 | 121.0 | 4.15 | 6.0 | 2.0 | 4.00 | 118.0 | 149.0 |
| 130.0 | 126.0 | 4.15 | 6.0 | 2.0 | 4.00 | 123.0 | 154.4 |
| 135.0 | 131.0 | 4.15 | 6.0 | 2.0 | 4.00 | 128.0 | 159.8 |
| 140.0 | 136.0 | 4.15 | 6.0 | 2.0 | 4.00 | 133.0 | 165.2 |
| 145.0 | 141.0 | 4.15 | 6.0 | 2.0 | 4.00 | 138.0 | 170.6 |
| 150.0 | 145.0 | 4.15 | 7.5 | 2.5 | 4.00 | 142.0 | 177.3 |
| 155.0 | 150.0 | 4.15 | 7.5 | 2.5 | 4.00 | 146.0 | 182.3 |
| 160.0 | 155.0 | 4.15 | 7.5 | 2.5 | 4.00 | 151.0 | 188.0 |
| 165.0 | 160.0 | 4.15 | 7.5 | 2.5 | 4.00 | 155.5 | 193.4 |
| 170.0 | 165.0 | 4.15 | 7.5 | 2.5 | 4.00 | 160.5 | 198.4 |
| 175.0 | 170.0 | 4.15 | 7.5 | 2.5 | 4.00 | 165.5 | 203.4 |
| 180.0 | 175.0 | 4.15 | 7.5 | 2.5 | 4.00 | 170.5 | 210.0 |
| 185.0 | 180.0 | 4.15 | 7.5 | 2.5 | 4.00 | 175.5 | 215.2 |
| 190.0 | 185.0 | 4.15 | 7.5 | 2.5 | 4.00 | 180.5 | 220.0 |
| 195.0 | 190.0 | 4.15 | 7.5 | 2.5 | 4.00 | 185.5 | 225.0 |
| 200.0 | 195.0 | 4.15 | 7.5 | 2.5 | 4.00 | 190.5 | 230.0 |
Materials & strength
Axial retention
Seated in its groove, the clip shoulders the load of bearings and components along the shaft axis.
Frequently asked
What is a DIN 471 circlip?
An external retaining ring fitted into a machined groove on a shaft. Once sprung into the groove its protruding face forms a shoulder that locates bearings, gears and spacers axially.
How are external circlips fitted?
With circlip pliers engaging the lug holes: the clip is expanded just enough to pass over the shaft and released into the groove. Overspreading distorts the ring and reduces its grip.
Need DIN 471 in a non-standard size or material?
Send us your drawing — specials quoted within 24 hours.