DIN 472 Internal Circlips
8.0mm - 200.0mm
Spring steel
DIN 472 covers internal circlips — sprung retaining rings that seat in a groove inside a bore to retain bearings and components. We supply internal circlips for a wide range of bore diameters.
Also known as: internal retaining rings, bore circlips, snap rings.
DIN 472 dimensions
| Bore Diameter | Groove Diameter | Groove Width | Edge Margin (n) | Groove Depth | Circlip Thickness | Circlip Free Diameter | Clearance Diameter |
|---|---|---|---|---|---|---|---|
| 8.0 | 8.4 | 0.90 | 0.6 | 0.2 | 0.80 | 8.7 | 3.0 |
| 9.0 | 9.4 | 0.90 | 0.6 | 0.2 | 0.80 | 9.8 | 3.7 |
| 9.5 | 9.9 | 1.10 | 0.6 | 0.2 | 1.00 | 10.3 | 3.2 |
| 10.0 | 10.4 | 1.10 | 0.6 | 0.2 | 1.00 | 10.8 | 3.3 |
| 11.0 | 11.4 | 1.10 | 0.6 | 0.2 | 1.00 | 11.8 | 4.1 |
| 12.0 | 12.5 | 1.10 | 0.8 | 0.3 | 1.00 | 13.0 | 4.9 |
| 13.0 | 13.6 | 1.10 | 0.9 | 0.3 | 1.00 | 14.1 | 5.4 |
| 14.0 | 14.6 | 1.10 | 0.9 | 0.3 | 1.00 | 15.1 | 6.2 |
| 15.0 | 15.7 | 1.10 | 1.1 | 0.4 | 1.00 | 16.2 | 7.2 |
| 16.0 | 16.8 | 1.10 | 1.2 | 0.4 | 1.00 | 17.3 | 8.0 |
| 18.0 | 19.0 | 1.10 | 1.5 | 0.5 | 1.00 | 19.5 | 9.4 |
| 19.0 | 20.0 | 1.10 | 1.5 | 0.5 | 1.00 | 20.5 | 10.4 |
| 20.0 | 21.0 | 1.10 | 1.5 | 0.5 | 1.00 | 21.5 | 11.2 |
| 21.0 | 22.0 | 1.10 | 1.5 | 0.5 | 1.00 | 22.5 | 12.2 |
| 22.0 | 23.0 | 1.10 | 1.5 | 0.5 | 1.00 | 23.5 | 13.2 |
| 23.0 | 24.1 | 1.30 | 1.7 | 0.6 | 1.20 | 24.6 | 14.2 |
| 24.0 | 25.2 | 1.30 | 1.8 | 0.6 | 1.20 | 25.9 | 14.8 |
| 25.0 | 26.2 | 1.30 | 1.8 | 0.6 | 1.20 | 26.9 | 15.5 |
| 26.0 | 27.2 | 1.30 | 1.8 | 0.6 | 1.20 | 27.9 | 16.1 |
| 27.0 | 28.4 | 1.30 | 2.1 | 0.7 | 1.20 | 29.1 | 17.1 |
| 28.0 | 29.4 | 1.30 | 2.1 | 0.7 | 1.20 | 30.1 | 17.9 |
| 29.0 | 30.4 | 1.30 | 2.1 | 0.7 | 1.20 | 31.1 | 18.9 |
| 30.0 | 31.4 | 1.30 | 2.1 | 0.7 | 1.20 | 32.1 | 19.9 |
| 31.0 | 32.7 | 1.30 | 2.6 | 0.9 | 1.20 | 33.4 | 20.0 |
| 32.0 | 33.7 | 1.30 | 2.6 | 0.9 | 1.20 | 34.4 | 20.6 |
| 33.0 | 34.7 | 1.30 | 2.6 | 0.9 | 1.20 | 35.5 | 21.6 |
| 34.0 | 35.7 | 1.60 | 2.6 | 0.9 | 1.50 | 36.5 | 22.6 |
| 35.0 | 37.0 | 1.60 | 3.0 | 1.0 | 1.50 | 37.8 | 23.6 |
| 36.0 | 38.0 | 1.60 | 3.0 | 1.0 | 1.50 | 38.8 | 24.6 |
| 37.0 | 39.0 | 1.60 | 3.0 | 1.0 | 1.50 | 39.8 | 25.4 |
| 38.0 | 40.0 | 1.60 | 3.0 | 1.0 | 1.50 | 40.8 | 26.4 |
| 40.0 | 42.5 | 1.85 | 3.8 | 1.3 | 1.75 | 43.5 | 27.8 |
| 41.0 | 43.5 | 1.85 | 3.8 | 1.3 | 1.75 | 44.5 | 28.6 |
| 42.0 | 44.5 | 1.85 | 3.8 | 1.3 | 1.75 | 45.5 | 29.6 |
| 45.0 | 47.5 | 1.85 | 3.8 | 1.3 | 1.75 | 48.5 | 32.0 |
| 47.0 | 49.5 | 1.85 | 3.8 | 1.3 | 1.75 | 50.5 | 33.5 |
| 48.0 | 50.5 | 1.85 | 3.8 | 1.3 | 1.75 | 51.5 | 34.5 |
| 50.0 | 53.0 | 2.15 | 4.5 | 1.5 | 2.00 | 54.2 | 36.3 |
| 51.0 | 54.0 | 2.15 | 4.5 | 1.5 | 2.00 | 55.2 | 37.3 |
| 52.0 | 55.0 | 2.15 | 4.5 | 1.5 | 2.00 | 56.2 | 37.9 |
| 55.0 | 58.0 | 2.15 | 4.5 | 1.5 | 2.00 | 59.2 | 40.7 |
| 56.0 | 59.0 | 2.15 | 4.5 | 1.5 | 2.00 | 60.2 | 41.7 |
| 57.0 | 60.0 | 2.15 | 4.5 | 1.5 | 2.00 | 61.2 | 42.7 |
| 58.0 | 61.0 | 2.15 | 4.5 | 1.5 | 2.00 | 62.2 | 43.5 |
| 60.0 | 63.0 | 2.15 | 4.5 | 1.5 | 2.00 | 64.2 | 44.7 |
| 62.0 | 65.0 | 2.15 | 4.5 | 1.5 | 2.00 | 66.2 | 46.7 |
| 63.0 | 66.0 | 2.15 | 4.5 | 1.5 | 2.00 | 67.2 | 47.7 |
| 64.0 | 67.0 | 2.15 | 4.5 | 1.5 | 2.00 | 68.2 | 48.7 |
| 65.0 | 68.0 | 2.65 | 4.5 | 1.5 | 2.50 | 69.2 | 49.0 |
| 67.0 | 70.0 | 2.65 | 4.5 | 1.5 | 2.50 | 71.5 | 50.8 |
| 68.0 | 71.0 | 2.65 | 4.5 | 1.5 | 2.50 | 72.5 | 51.6 |
| 70.0 | 73.0 | 2.65 | 4.5 | 1.5 | 2.50 | 74.5 | 53.6 |
| 72.0 | 75.0 | 2.65 | 4.5 | 1.5 | 2.50 | 76.5 | 55.6 |
| 75.0 | 78.0 | 2.65 | 4.5 | 1.5 | 2.50 | 79.5 | 58.6 |
| 76.0 | 79.0 | 2.65 | 4.5 | 1.5 | 2.50 | 80.7 | 59.6 |
| 78.0 | 81.0 | 2.65 | 4.5 | 1.5 | 2.50 | 82.5 | 60.1 |
| 80.0 | 83.5 | 2.65 | 5.3 | 1.8 | 2.50 | 85.5 | 62.1 |
| 82.0 | 85.5 | 2.65 | 5.3 | 1.8 | 2.50 | 87.5 | 64.1 |
| 85.0 | 88.5 | 3.15 | 5.3 | 1.8 | 3.00 | 90.5 | 66.9 |
| 88.0 | 91.4 | 3.15 | 5.3 | 1.8 | 3.00 | 93.5 | 69.9 |
| 90.0 | 93.5 | 3.15 | 5.3 | 1.8 | 3.00 | 95.5 | 71.9 |
| 92.0 | 95.5 | 3.15 | 5.3 | 1.8 | 3.00 | 97.5 | 73.7 |
| 95.0 | 98.5 | 3.15 | 5.3 | 1.8 | 3.00 | 100.5 | 76.5 |
| 98.0 | 101.5 | 3.15 | 5.3 | 1.8 | 3.00 | 103.5 | 79.0 |
| 100.0 | 103.5 | 3.15 | 5.3 | 1.8 | 3.00 | 105.5 | 80.6 |
| 102.0 | 106.0 | 4.15 | 6.0 | 2.0 | 4.00 | 108.0 | 82.0 |
| 105.0 | 109.0 | 4.15 | 6.0 | 2.0 | 4.00 | 112.0 | 85.0 |
| 108.0 | 112.0 | 4.15 | 6.0 | 2.0 | 4.00 | 115.0 | 88.0 |
| 110.0 | 114.0 | 4.15 | 6.0 | 2.0 | 4.00 | 117.0 | 88.2 |
| 112.0 | 116.0 | 4.15 | 6.0 | 2.0 | 4.00 | 119.0 | 90.0 |
| 115.0 | 119.0 | 4.15 | 6.0 | 2.0 | 4.00 | 122.0 | 93.0 |
| 120.0 | 124.0 | 4.15 | 6.0 | 2.0 | 4.00 | 127.0 | 96.9 |
| 125.0 | 129.0 | 4.15 | 6.0 | 2.0 | 4.00 | 132.0 | 101.9 |
| 127.0 | 131.0 | 4.15 | 6.0 | 2.0 | 4.00 | 135.0 | 103.9 |
| 130.0 | 134.0 | 4.15 | 6.0 | 2.0 | 4.00 | 137.0 | 106.9 |
| 135.0 | 139.0 | 4.15 | 6.0 | 2.0 | 4.00 | 142.0 | 111.5 |
| 140.0 | 144.0 | 4.15 | 6.0 | 2.0 | 4.00 | 147.0 | 116.5 |
| 145.0 | 149.0 | 4.15 | 6.0 | 2.0 | 4.00 | 152.0 | 121.0 |
| 150.0 | 155.0 | 4.15 | 7.5 | 2.5 | 4.00 | 158.0 | 124.8 |
| 155.0 | 160.0 | 4.15 | 7.5 | 2.5 | 4.00 | 164.0 | 129.8 |
| 160.0 | 165.0 | 4.15 | 7.5 | 2.5 | 4.00 | 169.0 | 132.7 |
| 165.0 | 170.0 | 4.15 | 7.5 | 2.5 | 4.00 | 174.5 | 137.7 |
| 170.0 | 175.0 | 4.15 | 7.5 | 2.5 | 4.00 | 179.5 | 141.6 |
| 175.0 | 180.0 | 4.15 | 7.5 | 2.5 | 4.00 | 184.5 | 146.6 |
| 180.0 | 185.0 | 4.15 | 7.5 | 2.5 | 4.00 | 189.5 | 150.2 |
| 185.0 | 190.0 | 4.15 | 7.5 | 2.5 | 4.00 | 194.5 | 155.2 |
| 190.0 | 195.0 | 4.15 | 7.5 | 2.5 | 4.00 | 199.5 | 160.2 |
| 195.0 | 200.0 | 4.15 | 7.5 | 2.5 | 4.00 | 204.5 | 165.2 |
| 200.0 | 205.0 | 4.15 | 7.5 | 2.5 | 4.00 | 209.5 | 170.2 |
Materials & strength
Bore retention
Sprung outward into the housing groove, the clip retains bearings and components inside the bore.
Frequently asked
What is a DIN 472 circlip?
An internal retaining ring fitted into a groove machined inside a housing bore. The sprung ring presses outward into the groove and its inner face forms the shoulder that retains bearings and parts in the bore.
What is the difference between DIN 471 and DIN 472?
DIN 471 clips fit grooves on shafts (external); DIN 472 clips fit grooves in bores (internal). The two are not interchangeable - each is sized and sprung for its seating direction.
Need DIN 472 in a non-standard size or material?
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