| Also known as | D2428 |
| Diagram | Fig. 29 — FENDERS · ref 10 |
| Subsystem | forks front |
| Listed in parts books | 1971–1974, 1976–1980, 1983, 1985 |
Washer
A 5/16 in. spring washer used under nuts and bolts across many assemblies on Triumph motorcycles, part 60-2428.
This is the 5/16 in. spring washer, Triumph part number 60-2428, also listed under the older D2428 designation. It's a general hardware item that turns up all over the catalog rather than being tied to one spot on the bike - the parts books show it under fenders, fork assemblies, gas tank fittings, timing cover gears, exhaust fixings, and more, spanning catalog entries from 1971 into 1985.
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A spring washer like this sits under a nut or bolt head to keep tension on the fastener and resist it working loose from vibration - and on a running motorcycle there's plenty of that to go around. Because this one shows up in so many different assemblies, it's worth keeping a few in the parts bin rather than trying to source one every time you need it.
Given how many figures list this part, it's not fussy about exact application - if your parts book calls for a 5/16 in. spring washer in any of these areas, this is the one. Confirm you're matching the right diameter for your specific fastener before ordering, since the catalog doesn't call out a single dedicated location for it.
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