| Also known as | 29-541 |
| Diagram | Fig. 5 — OIL PUMP, GEARBOX SPROCKET · ref 10 |
| Subsystem | gearbox |
| Listed in parts books | 1969–1972 |
BSA Lockwasher for screw, line 11 (1/4")
A 1/4 inch lockwasher used under a screw at various points across the gearbox, engine, and chassis assemblies.
29-0541 is a 1/4 inch lockwasher that fits under a screw referenced as line 11 in the parts book. It's a small hardware item, and the catalog shows it turning up in a lot of different assemblies across the bike rather than being tied to one spot - oil pump and gearbox sprocket, cylinder barrel and exhaust area, swinging arm and rear brake linkage, mudguards, crankcase, and more. That spread is normal for a common lockwasher size; the shop stocks it because so many different fasteners on these machines call for the same 1/4 inch lock washer.
Read more
The alias 29-541 is just the same part number without the leading zero, same physical washer.
If you're chasing this down for a specific screw on your bike, tell us which figure or assembly you're working from so we can confirm you've got the right one - with this many appearances in the book, it pays to double check before ordering.
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.
Sorry if we got something wrong here. If you think this information isn't correct, .