| Diagram | Fig. 17 — MUDGUARDS · ref 8 |
| Subsystem | bodywork |
| Listed in parts books | 1969–1970 |
BSA Washer, number plate bracket to guard (1/4" x 5/8" x .048")
A small 1/4" x 5/8" x .048" flat washer used between the number plate bracket and the mudguard.
This is a flat washer that sits between the number plate bracket and the mudguard it mounts to. It measures 1/4 inch bore by 5/8 inch outside diameter by .048 inch thick, so it's a small spacer-type washer rather than anything structural in its own right.
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It turns up across a wide range of mudguard, bodywork, and electrical-equipment figures in the parts books, which tells you this is a common hardware item used in more than one place on the bike, not just at the number plate. Given how it's called out specifically for the number plate bracket to guard joint, its job is to spread the load and keep the bracket from working loose or marking up the guard.
The catalog data ties this to appearances across 1969 to 1970, but with a part this small and this widely used, it is worth confirming against your own parts book before ordering, especially if you are trying to match an original mudguard mounting stack.
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.
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