| Also known as | E3440 |
| Diagram | Fig. 14 — CHAINCASE AND ALTERNATOR · ref 25 |
| Subsystem | primary |
| Listed in parts books | 1960–1962 |
Screw, primary (1/4-20 x 1-11/16 in.)
A 1/4-20 x 1-11/16 in. screw used on the primary chaincase, Triumph part 70-3440.
This is a primary chaincase screw, 1/4-20 thread, 1-11/16 in. long, listed under Triumph part number 70-3440. It shows up in the CHAINCASE AND ALTERNATOR figure, so it's one of the fasteners used to secure the primary chaincase cover assembly.
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The catalog carries this one across 1960-1962 appearances, and it's also known by the older E3440 form, which is worth knowing if you're cross-checking against an early parts book that uses the letter-prefix numbering.
It's a small, specific fastener, so if you're ordering to replace a stripped or lost screw, check the length and thread against what's actually in your chaincase before assuming it's a match.
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