| Diagram | Fig. 1 — CYLINDER AND CRANKSHAFT · ref 53 |
| Subsystem | engine top |
| Listed in parts books | 1969–1972 |
BSA Nut, footrest to anchor bolt (5/16" British Standard Cycle)
5/16 inch British Standard Cycle nut used to secure a footrest anchor bolt.
This is the nut that secures the footrest anchor bolt, threaded 5/16 inch British Standard Cycle. It shows up across a wide range of catalog listings tied to the FOOTRESTS AND BRAKE LINKAGE figure as well as frame, mudguard, and cylinder head listings, which just reflects how parts books group common small hardware across multiple figures rather than telling you it's used in all those spots the same way.
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The footrest anchor bolt runs through the frame lug and this nut clamps it down so the footrest stays put under your boot. It's a simple fastener but one that takes a beating over time from vibration and road use, so if the threads are worn or the nut won't tighten down snug anymore, it's worth swapping rather than fighting with it.
Given how many catalog rows this part number touches, it likely got used in a few different spots needing a 5/16 BSC nut, not just at the footrest. If you're ordering to match a specific bolt or stud on your bike, best to check the thread against what you've got before assuming it's a drop-in.
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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