As listed
| Field | Value |
|---|---|
| Seller | Aircraft Spruce |
| Type | Castellated nut |
| Materials | Cadmium-plated steel, stainless |
| Use | Drilled-shank, clevis and eye bolts, studs |
| Listing checked | 2026-09-30 |
Taken from Aircraft Spruce's product page on 2026-09-30. Where the listing does not state a figure, this table does not either.
What it is for
The thinner AN320 has half the AN310's tensile rating and is for shear-only applications, per the listing.
Pins: MS24665 cotter pins.
Sizes listed
| Type | Part No. | Thread Size | Cotter Pin Size |
|---|---|---|---|
| Cad Plated | AN310-3 | 10-32 | AN380-2-2 |
| Cad Plated | AN310-4 | 1/4-28 | |
| Cad Plated | AN310-5 | 5/16-24 | |
| Cad Plated | AN310-6 | 3/8-24 | AN380-3-3 |
| Cad Plated | AN310-7 | 7/16-20 | |
| Cad Plated | AN310-8 | 1/2-20 | |
| Cad Plated | AN310-9 | 9/16-18 | AN380-4-4 |
| Cad Plated | AN310-10 | 5/8-18 | |
| Cad Plated | AN310-12 | 3/4-16 | AN380-4-5 |
| Cad Plated | AN310-16 | 1-14 | |
| Stainless Steel | AN310C3 | 10-32 | AN380-2-2 |
| Stainless Steel | AN310C4 | 1/4-28 | |
| Stainless Steel | AN310C5 | 5/16-24 | |
| Stainless Steel | AN310C6 | 3/8-24 | AN380-3-3 |
| Stainless Steel | AN310C7 | 7/16-20 | |
| Stainless Steel | AN310C8 | 1/2-20 |
As listed by Aircraft Spruce on 2026-09-30. Check the live listing before ordering: stock and part numbers change.
Where to buy
The link opens Aircraft Spruce's own page for this item, so the price and stock you see are theirs and current. We do not copy prices.
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Sources
- Aircraft Spruce — AN310 Castle Nuts — product listing, checked 2026-09-30.