Dimension tables
Groove and ring dimensions for the standards we stock. Two of the three tables were taken from a published manufacturer specification and checked against a second, independent one. The third rests on a single manufacturer's data, and says so on its own page and on the card below — we would rather label it than leave it out.
DIN 471 dimensions
External rings for shafts. Groove diameter, groove width, ring thickness and edge margin, listed by shaft diameter.
Two independent sources, plus a manufacturer cross-check.
Open the table
DIN 472 dimensions
Internal rings for bores. Groove diameter, groove width, ring thickness and edge margin, listed by bore diameter.
Two independent sources, plus a manufacturer cross-check.
Open the table
DIN 6799 dimensions
E-clips, fitted from the side. Groove diameter, groove width, ring thickness and edge margin, listed by groove diameter.
One source: Springmasters Ltd.
Open the table
Printable dimension card
One A4 sheet per standard, meant for a workshop wall: the size range, what the nominal size is measured on, and the groove dimensions the standard fixes. Sized so it can be read at arm's length while the part is still in the machine.
Open the dimension cardHow much each table rests on
The rule here is two independent sources per figure, and where that could not be met the page stayed blank. DIN 6799 was blank for exactly that reason: the tables we had disagreed on which column was ring thickness and which was groove width, and a table that gets those the wrong way round sends someone to cut a groove to the wrong width.
It is published now, from Springmasters' own product data, and it is attributed to them on every page it appears on. That is one manufacturer specification rather than two independent references, and it is not presented as though it were — the difference is stated on the table itself. What settled it is that the figures answer the question that stopped us: groove width exceeds ring thickness by a consistent four to five hundredths in every row, and groove diameter equals the nominal size in every row, so the two columns cannot be the wrong way round without both relationships breaking at once.
The same source was checked against the DIN 471 and DIN 472 figures already published here and agreed on 43 of 44 sizes, all four figures each. The one exception — groove width at 8 mm in DIN 471 — is flagged on that table rather than averaged away.