20 mm DIN 471 A2 External Retaining Ring
Description
20 mm DIN 471 A2 External Retaining Ring
The 20 mm DIN 471 A2 external retaining ring is designed to retain components on grooved shafts. It provides reliable axial positioning of bearings, bushes, gears, pulleys and other machine elements while allowing straightforward installation and removal using circlip pliers.
Manufactured from A2 stainless spring steel (AISI 420 / EN 1.4021), the retaining ring combines excellent spring properties with high corrosion resistance, making it suitable for both indoor and outdoor applications exposed to normal atmospheric conditions.
Applications
- Shaft assemblies
- Bearings
- Bushings
- Gears
- Pulleys
- Mechanical equipment
- Industrial machinery
- Power transmission systems
- Maintenance and repair
- General mechanical assemblies
Product Features
- Standard: DIN 471
- Equivalent standard: PN 85111
- Material: Stainless spring steel A2 (AISI 420 / EN 1.4021)
- Shaft diameter: 20 mm
- External retaining ring
- Excellent corrosion resistance
- Easy installation using circlip pliers
- Suitable for indoor and outdoor use
Advantages
- Reliable axial retention
- Quick installation and removal
- High spring strength
- Excellent corrosion resistance
- Long service life
- Professional quality
Technical Information
- Standard: DIN 471 / PN 85111
- Material: Stainless spring steel A2 (AISI 420 / EN 1.4021)
- Type: External retaining ring for shafts
- Nominal shaft diameter: 20 mm
Technical Dimensions
All dimensions are in millimetres (mm).
| Symbol | Description | Dimension |
|---|---|---|
| d | Nominal shaft diameter | 20.0 mm |
| d3 | Inside diameter | 18.5 mm |
| d5 | Hole diameter | 2.0 mm |
| a | Ring width | 4.2 mm |
| b | Ring thickness | 2.8 mm |
| s | Material thickness | 1.2 mm |
*Dimensions are nominal values according to the DIN 471 standard and may vary slightly depending on the manufacturer.
Related Search Terms
DIN 471, external retaining ring, external circlip, circlip for shafts, stainless steel retaining ring, A2 retaining ring, shaft circlip, snap ring, DIN 471 A2, 20 mm retaining ring.

