| Also known as | F9050, I26 |
| Diagram | Fig. 8 — FOOTRESTS AND BRAKE LINKAGE · ref 28 |
| Subsystem | frame |
| Listed in parts books | 1968, 1971 |
NUT,L/H 7/16X20 BSA/TR25W
A 7/16 x 20 left-hand thread nut listed for BSA and TR25W applications, also known as I26 or later as 29-5839.
This is a left-hand thread nut, 7/16 x 20, listed against BSA and TR25W applications. The catalog record shows it as a later part number carried under 82-9050, with the older alias I26 in the earlier numbering system and a further replacement number, 29-5839, if you're chasing this part forward in more recent supersession lists.
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Because it's a left-hand thread, it's worth double-checking which side of the machine it belongs to before you order, since mixing it up with a standard right-hand nut in the wrong spot is an easy way to end up with a fastener that won't seat right. We don't have more detail on where exactly it's used beyond what's shown in our records, so if you're not sure this is the nut your parts book is calling for, give us a call and we'll confirm before you order.
Given the age of this listing and how thin the catalog entry is, treat this as a straightforward hardware item rather than something with a lot of story behind it. If your bike's parts book lists I26 or 29-5839 for the same position, you're looking at the same physical nut under a different number.
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