The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-024-1275, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-024-1275 |
| Primary Part Number | 3009921 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Width Across Flats | 0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Thread Pitch Diameters | +0.1717 TO 0.1736 INCHES IN |
| Material Document and Classification | AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL |
| Bearing Surface Type | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3009921 | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| 3009921 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 9682012135 | Pilatus Aircraft Ltd (CHE) |
| Reference | Meaning |
|---|---|
| 968.20.12.135 | 5/9 Secondary reference Pilatus Aircraft Ltd |
| 5310PL0135814 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10121985 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3009921 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-024-1275 is a Nut,self-Locking,hexagon, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-024-1275 has 3 manufacturer part numbers on file: 3009921 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), 3009921 (Leonardo Spa Helicopters Division - Production Site), 9682012135 (Pilatus Aircraft Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-714-0368. Verify interchangeability with system specifications before substitution.
Key specifications for 3009921: Width Across Flats: 0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; Thread Series: UNF; Thread Pitch Diameters: +0.1717 TO 0.1736 INCHES IN; Material Document and Classification: AMS 5640 ASSN STD ALL MATERIAL RESPONSES OVERALL. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.