| Diagram | Fig. 19 — HANDLEBARS AND CONTROL LEVERS T20SS AND T20SH · ref 21 |
| Subsystem | controls |
| Listed in parts books | 1964–1968 |
Thumb nut :
A hand-adjustable thumb nut used on control lever and handlebar assemblies, later superseded by 18/838.
This is a thumb nut used on handlebar and control lever assemblies, the kind you turn by hand rather than with a spanner, typically found holding an adjuster or cable clamp in place where you need to make quick adjustments without tools. It shows up across a run of handlebar and control lever figures in the parts books, and also turns up in the battery/toolkit/air filter figure, so it's a small hardware item that gets used in more than one spot on the bike.
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The factory later superseded this part number with 18/838, so if you're working from an older parts book and see 18/1006 listed, that's the same physical piece under the current number. Worth checking your own hardware against the later number when sourcing a replacement.
We don't have more detail on this one beyond its use in control lever setups. If you're not sure which lever or clamp it goes with on your bike, give us a call and we'll sort out fitment before you order.
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