| Diagram | Fig. 5 — 850 Engine: Crankcases, Filter, Breather, Tachometer Drive · ref 9 |
| Subsystem | engine bottom |
| Listed in parts books | 1975 |
Norton Stud, Stepped, Cylinder
Stepped cylinder stud for the crankcase/cylinder base area, cataloged for 1975.
This is a stepped cylinder stud, listed in the crankcase and breather section of the engine records we have for it. A stepped stud like this is used where the thread diameter or pitch differs between the two ends, so the base end seats into the crankcase while the top end takes the cylinder or head fastener down through the barrel.
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The catalog record we have ties this part to a single model year, 1975, and doesn't give us more detail beyond that. Given the manufacturer listed for this part number, this is a Norton stud rather than a Triumph piece, so don't cross it with Triumph cylinder studs by appearance alone.
If you're rebuilding a case or barrel and need to know exact thread specs or length, give us a call before you order — our record for this one is brief and we'd rather confirm than guess.
Sorry if we got something wrong here. If you think this information isn't correct, .