CC-DIN472-DS-21 revA Size datasheet - 21
'?) CommunityCAD
DIN 472 21 internal retaining ring
Size datasheet: this size's values with their levels, conventions and sources.
For a 21mm bore Part key din472-d21 ——— ee] Files 1 STEP AP214 (simplified) 21, front view, 1.5:1 21, view from above, 1:1
Sym. Dimensi Value Level s Ring thickness 1 La - 4 d3 Free diameter 22.5 L1-4 a Lug height (max) < 4.2 L1-4 b Radial width at the back (=) 2.4 ref L1-4 d5 Plier hole (min) >2 L1-4 d2 Groove diameter 22 L1- 3 m Groove width (H13) 1.1 L1- 3 n Groove edge margin (min) >1.5 L1-3
Modeled value: nominal, else the midpoint of min-max. s / =: only that limit is given. * amber: one source (LO). c: a source value was corrected. Level - independent sources.
DIN 472:2017-06 (superseded by DIN 472:2026-05) Page 1/2 Retaining ring for bores - 21 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec c964ffabe3a887708eb3e6e0cal8e3b2147b3b9c
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.
---
CC-DIN472-DS-21 revA Size datasheet - 21
'?) CommunityCAD
Conventions
e Values: s and d3 (the free outer diameter) at their nominals, the ring free (unstressed); a at its max and d5 at its min (single limits); b at its approximate value.
« Outline: An eccentric circle gives width b at the back and b/2 at the front; square lugs of side a with the d5 hole centred; a parallel opening b wide (sheet DO2).
« Lugs: Holed lugs at every size; no open hooks.
« Edges, faces and markings: Sharp edges and joins, flat parallel faces, no markings. Material and finish are metadata only: one model per size.
« Groove: The groove d2, mand n is tabulated for your design; it isn't modeled.
Sources
Source Publisher Retrieved sha256
fasteners-eu-din472 fasteners.eu 2026-10-26 455708b#767b
fasten-it-din472 fasten.it 2026-10-26 b57454e93fbe he-maschinentechnik-din472 HC Maschinentechnik 2026-10-26 ef810e5b7ed0
seeger-din472 Seeger - Orbis n/a c4dc6913F7a9 (kept outside the repo)
The whole series (verification map, corrections, drawings): CC-DIN472-Ds.
DIN 472:2017-06 (superseded by DIN 472:2026-05) Page 2/2 Retaining ring for bores - 21 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec c964ffabe3a887708eb3e6e0cal8e3b2147b3b9c
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.