DIN 471 Ring: retaining for shafts · Products: 116 DIN 471 - Retaining rings for shafts - Normal type and heavy type Retaining rings for shafts, seated axially in a groove to locate parts and sized by one nominal shaft diameter, unlike the radially fitted DIN 6799 E-clip with its shaft range. Made in a normal type and a heavy type. DIN 471:2026-05; a size is the pair of shaft diameter and ring thickness, and the heavy type is the thicker ring for the same shaft and groove.