| Also known as | F3191 |
| Diagram | Fig. 8 — FRAME COMPLETE · ref 40 |
| Subsystem | frame |
| Listed in parts books | 1963–1964 |
Bolt (2 11/16 in. U.H.)
A 2 11/16 in. under-head frame bolt for Triumph frames, cataloged as 82-3191 (alias F3191).
This is a frame bolt listed in the catalog as 2 11/16 in. under the head, cataloged under Triumph part number 82-3191. The older parts book form F3191 turns up as an alias for the same part, which is the usual pattern for pieces that carried a letter prefix before Triumph moved to the all-numeric system.
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It shows up in the FRAME COMPLETE figure, so it's one of the fasteners holding the frame assembly together rather than something tied to the engine or running gear. Beyond the length under the head, our record doesn't spell out thread size or finish, so if you're matching an original bolt hole check the diameter and thread pitch against what's already on the bike before you order.
Catalog appearances put it in the 1963-1964 window, but that's just where it turns up in our records, not a guarantee it's the only place it fits. Give the shop a call if you want us to confirm it against your particular frame.
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