| Also known as | E3438 |
| Diagram | Fig. 7 — GEARBOX AND CASING · ref 29 |
| Subsystem | gearbox |
| Listed in parts books | 1960–1962 |
Screw (1/4-20 x 2-9/16 in., cross head)
A 1/4-20 x 2-9/16 in. cross-head screw used on the gearbox casing.
This is a gearbox casing screw, 1/4-20 thread, 2-9/16 inch long, with a cross-head (Phillips-style) slot. It shows up in the parts book under the GEARBOX AND CASING figure, so it's one of the fasteners holding the gearbox shell together rather than anything internal to the gear cluster itself.
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The catalog carries it as 70-3438, with E3438 as the older reference for the same part. It appears across catalog listings from 1960 to 1962, which tells you the era it's associated with in our records, but we'd rather you check it against your actual casing than guess off a year range alone.
If you're reassembling a gearbox and one of these screws is buggered up, stripped, or just missing, it's worth replacing rather than reusing a tired one — cross-head screws on old casings are notorious for chewed-up slots after a few services.
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