| Also known as | T1779 |
| Diagram | Fig. 7 — GEARBOX INNER COVER AND SELECTORS · ref 23 |
| Subsystem | gearbox |
| Listed in parts books | 1964–1965, 1967–1968 |
Socket screw
Socket screw for the gearbox inner cover, also listed under the older T1779 number.
This is a socket screw that lives on the gearbox inner cover, part of the assembly shown in the parts book under gearbox inner cover and selectors. It shows up under the older T1779 designation as well as the current 57-1779 number, so if you're working from an early parts book don't be surprised to see the letter-prefix form instead.
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The catalog record ties this screw to the gearbox inner cover and selector mechanism, holding that cover down against the gearbox shell. It appears across several catalog listings spanning 1964 through 1968, which tells you it was a running part on that cover design for a stretch of years rather than a one-off fitment.
If you're replacing a full set, it's worth checking the rest of the inner cover fasteners at the same time since they all see the same vibration and heat cycling. Confirm you're matching it to the correct inner cover before ordering, since gearbox covers changed over the years.
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