NAS509 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | Jam nut |
| Material | Steel; A286 corrosion-resistant steel (C) |
| Status | Check the current issue of the standard before design use. |
Dimensions by size
| Dimension, in | .1900-32 | .2500-28 | .3125-24 | .3750-24 | .4375-20 | .5000-20 |
|---|---|---|---|---|---|---|
| A — Across flats | .375 | .438 | .500 | .563 | .625 | .750 |
| C — Thickness | .053 | .056 | .058 | .060 | .063 | .093 |
| B — Across corners | .411 | .484 | .555 | .628 | .700 | .844 |
| D — Hole diameter (drilled, 3 places) | .156 | .188 | .219 | .250 | .281 | .313 |
Dimensions in inches, as tabulated for the part. Blank cells (—): not stated in the documents we hold; take them from the standard.
Part numbers
| Part no. | Size |
|---|---|
| NAS509-3 | .1900-32 |
| NAS509-4 | .2500-28 |
| NAS509-5 | .3125-24 |
| NAS509-6 | .3750-24 |
| NAS509-7 | .4375-20 |
| NAS509-8 | .5000-20 |
Part numbers as listed for the part; the standard governs and may list others.
Part number
What each code means
| Part | Meaning |
|---|---|
| Example | NAS509-4 — .2500-28 drilled jam nut |
Notes from the standard
- C indicates A286 CRES; L indicates a left-hand thread. The listing shows no prefixed or suffixed part numbers.
- Part number format as commonly written; check the standard for the exact format.
- Approved data governs. Use the nut the SRM, drawing or IPC calls for.
Where to buy
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Distributors coming soon.
Sources
- NAS509 — Nut, Drilled Jam, Hexagon, Steel and A286 CRES — nominal sizes and part numbers.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.