DIN 471 external circlip (for shafts)

DIN 471 is the standard for retaining rings for shafts, also called external circlips or shaft snap rings. The ring is opened with pliers, slid over the end of the shaft and seated in a groove, forming a shoulder that stops the axial movement of bearings, gears, pulleys and bushings, with no thread, weld or nut.

Lines conforming to DIN 471

Click a line to see the size table, or download the PDF datasheet.

Also compatible with the DIN 471 groove

Lines with their own geometry that fit the same DIN 471 groove. They are alternatives when the design calls for less radial space, 360° support, axial play compensation or stainless steel.

How to specify

1. Shaft diameter (d1). This is the nominal size of the ring. Measure the shaft, not the loose ring: the free diameter of the ring is smaller than the nominal size.
2. Version. The standard version covers most applications. The heavy version (AS) is for higher axial loads or grooves with a reduced area, such as on splined shafts.
3. Material. Spring steel as standard; stainless steel for corrosive environments, on request.
4. Load and speed. Check the permissible axial load in the datasheet and, for rotating parts, the maximum speed.