| Also known as | S644 |
| Diagram | Fig. 9 — GEARBOX OUTER COVER AND LEVERS · ref 43 |
| Subsystem | gearbox |
| Listed in parts books | 1969–1971, 1974 |
Clamp bolt (1-5/16 in. U.H.)
Clamp bolt, 1-5/16 in. under the head, for the gearbox outer cover and clutch assembly on unit Triumph twins.
This is a clamp bolt, 1-5/16 in. under the head, used on the gearbox outer cover and clutch area of the unit-construction Triumph twins. It shows up in the parts books under the older S644 designation as well as the current 21-0644 number, so if your book lists S644 you're looking at the same part.
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Catalog listings place this bolt in gearbox outer cover and clutch assembly work, where a clamp bolt of this length is used to secure components together rather than thread into a tapped hole on its own. The factory eventually renumbered this part to 14-0218, so if your reference material or a parts breakdown shows that number, it's the same physical bolt under its later designation.
When ordering, check the length against what's called for in your gearbox or clutch assembly before installing, since a clamp bolt that's too long or short for the application won't seat correctly.
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