| Also known as | S1916 |
| Diagram | Fig. 7 — TIMING COVER AND CONTACT BREAKER · ref 6 |
| Subsystem | engine bottom |
| Listed in parts books | 1969–1970, 1974 |
Screw (1 1/4 in. U.H.)
A 1 1/4 in. U.H. screw used in the timing cover and contact breaker assembly on unit Triumph twins.
This is a screw that shows up in the timing cover and contact breaker area on unit-construction Triumph twins, per the catalog entry it belongs to. The catalog calls it out as 1 1/4 in. U.H., which is the length spec you'll want to match if you're pulling one out to replace it. It carries the older S1916 number in earlier parts books, same physical fastener under the legacy prefix.
Read more
With three appearances across catalog years spanning 1969 to 1974, it's not a one-off item, but our record doesn't spell out which specific models or years it's tied to beyond that range. If you're chasing down a screw from a timing cover job, bring the old one to the counter or call ahead so we can confirm it's the right length and head type before you buy.
Thread and head details on this one vary a bit depending on which catalog you're reading from, so rather than guess at a spec that isn't nailed down consistently, we'll just say: it's a small fastener from the timing cover and contact breaker assembly, and matching by length and thread is the safest way to get the right one.
Sorry if we got something wrong here. If you think this information isn't correct, .