| Also known as | F6310 |
| Diagram | Fig. 19 — FENDERS · ref 20 |
| Subsystem | bodywork |
| Listed in parts books | 1965–1974 |
Plain washer (large)
A 5/16 in. x 15/16 in. plain washer used under fender bracket and oil tank hardware on Triumph motorcycles.
This is a plain washer, the larger of the sizes Triumph used, showing up across the fender and mudguard figures in the parts books along with an appearance in the oil tank section. It also carries the older F6310 alias if you're working from an earlier parts book.
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The washer measures 5/16 inch inner diameter by 15/16 inch outer diameter, sized to sit under a fender bracket bolt or nut and spread the load so the bracket doesn't dig into the fender or work loose over time.
Our catalog record ties this one to mudguard and fender hardware and an oil tank listing across a long run of years, but it doesn't spell out which specific models or model-years each of those installations belonged to, so check your bike's fastener sizing before you order a batch.
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