Details
| Diagram | Fig. 4 — CRANKSHAFT — PISTONS · ref 14 |
| Subsystem | engine bottom |
| Listed in parts books | 1971–1972 |
BSA Locknut — connecting rod bolt (5/16" B.S.C.)
Locknut for the 5/16" B.S.C. connecting rod bolt, used on the crankshaft assembly.
PN · 71-1957
This is a locknut for the connecting rod bolt, sized 5/16" B.S.C. It shows up in the crankshaft and pistons section of the parts book, where it's used to secure the rod bolt in place once everything is torqued up.
Not listed anywhere
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
Sign in to request it
We need somewhere to send the price and the photographs.
Pin your bike to check this part fits.
Sorry if we got something wrong here. If you think this information isn't correct, .
Related parts
Connecting rod bolt (5/16" British Standard Cycle)
PN 67-1536 · Goes with this
Connecting rod complete, less big-end shell (right-hand)
PN 71-1105 · Goes with this
Crankshaft
PN 71-1346 · Goes with this
Shell — connecting rod big-end (·010" undersize)
PN 67-1431 · Goes with this