| Also known as | 14.0703 |
| Diagram | Fig. 15 — FRAME · ref 20 |
| Subsystem | frame |
| Listed in parts books | 1969–1974 |
Self-locking nut
A 3/8-24 UNF thin self-locking (Philidas-type) nut used in frame hardware locations.
This is a self-locking nut, 3/8-24 UNF, thin pattern, of the Philidas locking type. It shows up in the FRAME section of the parts books across 1969 through 1974, and it's the kind of nut used where something pivots and a standard nut would either work loose or need to be over-torqued to stay put.
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Because it's a thin nut with a built-in locking feature, it's suited to spots with limited clearance where you still need something that resists vibrating off. The catalog carries it under 14-0703, and you'll also see it cross-referenced as 90566A220 in some listings.
If you're replacing one of these, it's worth grabbing a couple while you're at it since they tend to get reused in more than one spot on the frame hardware.
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