| Diagram | Fig. 35 — ELECTRICAL COMPONENTS · ref 24 |
| Listed in parts books | 1974, 1976–1980, 1983 |
Bolt
A Triumph electrical-system bolt, PN 21-2120, used across multiple mid-'70s to early-'80s catalog listings.
This is a bolt from the electrical components group in the Triumph parts books, catalogued as 21-2120. It shows up across a run of catalog years from the mid-1970s into the early 1980s, and it appears in enough different listings that it was clearly a common fastener used in more than one spot on the electrical side of the bike.
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The catalog description is just "Bolt" with no further detail on length, thread, or head style spelled out in our record, so we can't tell you exactly which bracket, switch, or component it secures without more to go on. If you've got the old bolt in hand, bring it by or send us a photo and we can match it up before you order.
Given how plain the listing is, this is the kind of hardware worth checking against your bike's specific electrical fittings rather than assuming one-size-fits-all.
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