| Also known as | 57-423A, T423A |
| Diagram | Fig. 10 — CLUTCH · ref 13 |
| Subsystem | primary |
| Listed in parts books | 1960–1962, 1964–1971, 1974 |
Screwed pin (1 27/32 in. U.H.)
A screwed clutch pin, 1 27/32 in. U.H., used in the clutch assembly on a range of Triumph twins.
This is a screwed pin used in the clutch assembly, listed at 1 27/32 in. U.H. It shows up in clutch figures across a long catalog span, from 1960 into 1974, which tells you it's a component that stuck around through a lot of production changes without getting redesigned.
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The older parts books list this one under the T423A designation, and you'll also see it written as 57-423A, but all three numbers point at the same physical piece. If you're working from an old book or a parts list handed down with the bike, any of those numbers should get you to the same pin.
We don't have more detail on this one beyond the length and the clutch application, so if you're not sure which stud or pin your particular clutch setup calls for, give the shop a call and we'll sort out fitment before you order.
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