| Diagram | Fig. 5 — CRANKCASE · ref 2 |
| Subsystem | engine bottom |
| Listed in parts books | 1970 |
BSA Stud, stator mounting (5/16" U.N.F. /UNC. × 1½")
A 5/16 in. UNF/UNC, 1½ in. stator mounting stud for the crankcase.
This is a mounting stud used to hold the stator in place in the crankcase area, threaded 5/16 in. U.N.F./U.N.C. and 1½ in. long. It shows up once in the crankcase figure of the parts books, so the catalog record on it is thin, but the spec itself is straightforward: a double-ended stud with a fine thread on one end and a coarse thread on the other, sized to hold the stator bracket down against the case.
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Because it only turns up in a single crankcase listing tied to 1970, we can't speak to how far back or forward this stud carries across other years. If you're replacing one, check the thread engagement and length against what's currently in the case before you order, since studs like this can get swapped out over the years with something close but not exact.
Call or write in with your crankcase details if you want us to confirm this is the right stud before it ships.
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