From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Size alteration for square collar nuts.
| Identifier | ExFiles\Box 77\5\ scan0236 | |
| Date | 6th November 1928 | |
| X.1221 BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} E1/M6.11.28. c. to BJ. Hs.{Lord Ernest Hives - Chair} SQUARE COLLAR NUTS. LeC.2590 Regarding the models of the abobe brought here by Hs.{Lord Ernest Hives - Chair}, we think there is just one alteration needed, and that is, a slight reduction in the size of the square of the 2.BA. This should be altered from .350 to .343. The latter size being a 32 dimension will most probably be more convenient as regards purchasing the square bar. E.{Mr Elliott - Chief Engineer} | ||