| Diagram | Fig. 2 — Engine: Cylinder, Cylinder Head · ref 17 |
| Subsystem | engine top |
| Listed in parts books | 1975 |
Norton Stud, Cylinder to Head
Cylinder-to-head stud for a Norton engine top end, 1975 model year per catalog record.
This is a cylinder head stud, the fastener that clamps the cylinder head down to the cylinder barrel on the engine top end. It's one of a set that runs around the barrel to hold everything together under compression and combustion loads.
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The catalog record ties this to the 1975 model year and lists it in the Cylinder and Cylinder Head section of the engine. Given the manufacturer coding here, this stud belongs to a Norton engine, not a Triumph, so don't cross it with Triumph cylinder-head hardware even if the two look similar on a shelf.
If you're rebuilding a head and pulling old studs, check thread condition in the case before reusing - a stripped thread in the barrel or head casting is a bigger job than swapping the stud itself. Call the shop if you want us to confirm this is the right stud for your particular engine before you order.
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