| Also known as | E1310 |
| Diagram | Fig. 15 — EXHAUST PIPES AND SILENCERS · ref 13 |
| Subsystem | exhaust |
| Listed in parts books | 1960–1968, 1970 |
NUT CARB FIXING/OIL BLOCK - CEI THREAD
Small CEI-thread hex nut used across carb, oil, exhaust, and fork fittings on Triumph twins, PN 70-1310.
This is a small hex nut, part number 70-1310, listed in the parts books as the carb fixing/oil block nut with a CEI thread. It's a widely-used fastener that turns up across a lot of different figures over the years - exhaust systems, oil tanks, engine and gearbox fittings, oil pumps, front forks, crankcase, and more - which tells you this is one of those general-purpose nuts Triumph used wherever a CEI-threaded stud needed securing rather than a part tied to one specific job.
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The older book form of this nut is E1310, so if you're working from an early parts list and see that number, it's the same piece. Given how many different assemblies call for it, it's worth keeping a few on hand in the toolbox rather than hunting one down mid-job.
Our catalog record ties this nut's appearances to Triumph figures spanning 1960 through 1970, but it doesn't pin it to one exact model or displacement - if you're chasing a specific application, check your bike's own parts book listing or give us a call to confirm before ordering.
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