A10R connecting rod nut

[Truckedup]

 Is the 67-1537 nut the same as the 70 2922 A65  connecting rod nut, 5/16-26 thread?  Thanks

[muskrat]

G'day Trucky.
They match large journal, not sure about small journal.
Cheers

found this https://www.classicbritishspares.com/products/bsa-twins-connecting-con-rod-nut-set-4-67-1537-37-1691-5-16-x-26-cei-a10-a65

[bikerboy]

I think the small journals had castelated nuts and split pins as you could not get a spanner on them otherwise. Quite a complex procedure as you used to fit the nut and torque it up then if the split pin hole did not line up you used to remove the nut and file the flat part until you could torque it up and the split pin holes used to line up.