| Also known as | F3809 |
| Diagram | Fig. 32 — D.C. IGNITION COILS, HORN, RECTIFIER AND ZENER DIODE · ref 13 |
| Subsystem | electrical |
| Listed in parts books | 1964–1968 |
Bolt (1 3/4 in. U.H.)
A 1 3/4 inch Triumph mounting bolt used around the ignition coils, horn, rectifier, and timing cover area on mid-1960s machines.
This is a Triumph bolt, 1 3/4 inch under the head, showing up under part number 82-3809 (also listed as F3809 in older books). Our catalog entries place it in the ignition coil, horn, rectifier, and zener diode area, and also in the timing cover and contact breaker figures, so it's doing mounting duty around the electrical components tucked near the timing cover rather than anywhere structural.
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With eight appearances spanning catalog years 1964 to 1968, this is a bolt that got reused across several assemblies rather than being a one-off fastener for a single bracket. If you're chasing down a mounting bolt for a coil bracket, rectifier, or horn mount from that era, this is worth checking against what's on the bike.
As with any small fastener like this, match it up against what's currently fitted before you order — length and thread need to line up with the specific bracket or mounting point you're working on.
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