| Also known as | F10002 |
| Diagram | Fig. 22 — GAS TANKS · ref 27 |
| Subsystem | fuel |
| Listed in parts books | 1968–1974, 1976–1980, 1983 |
Washer plain tap nut
Plain flat washer used under the tap nut on the petrol tank fitting, PN 83-0002.
This is the plain flat washer that seats under the tap nut on the petrol tank fitting, part number 83-0002, also listed as F10002 in older books. It shows up across catalog listings for gas tanks, twinseats, rear wheel, and rear brake figures, which tells you it's a general-purpose washer Triumph used in more than one spot, not just at the fuel tap.
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Most commonly it's associated with the petcock/tap mounting on the tank, sitting between the nut and the tank surface to spread the clamping load and help seal things up. It's a small, simple part but one that's easy to lose or mangle when you're pulling a tap for cleaning or replacement.
Given how it turns up in catalog entries spanning 1968 into 1980, it's a part that stuck around across a lot of production without much change. Worth keeping a spare or two in the parts drawer since these are easy to drop and roll under the bench.
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