| Also known as | 21 2010, S2010 |
| Diagram | Fig. 18 — REAR WHEEL · ref 9 |
| Subsystem | wheels |
| Listed in parts books | 1970, 1974 |
BOLT SPROCKET TO DRUM UNF
UNF bolt that fastens the rear sprocket to the brake drum on the rear wheel.
This is the bolt that holds the rear sprocket to the brake drum on the rear wheel. The catalog calls it out as a UNF fastener, and it shows up in the rear wheel section of the parts book. It's a small, unglamorous fastener but it's doing real work — it's the joint that transfers drive from the sprocket into the drum and hub assembly, so it needs to be in good shape and properly seated.
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Our record on this one comes from a single catalog listing tied to 1973, and it's also known under the alias S2010. If you're working through a rear wheel rebuild and pulling the sprocket off the drum, this is the bolt you're after — grab a full set since sprocket bolts usually go on in multiples.
Give us a call if you want to confirm exact quantity needed for your rear wheel before ordering, since the catalog entry here is just the single bolt line.
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