The Washer,lock, cataloged under National Stock Number 5310-00-274-8689, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-274-8689 |
| Primary Part Number | SP24281 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 0.692 INCHES NOMINAL IN |
| Material Thickness | 0.036 INCHES NOMINAL IN |
| Departure From Cited Document | AS MODIFIED BY SURFACE FINISH |
| Nondefinitive Spec/std Data | A TYPE |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.383 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN |
| 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 |
|---|---|
| SP24281 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 509570PC6 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 180227PC7 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 366910PC3 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 180227PC4 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 12Z22PC358 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| AN936A616 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-274-8689 is a Washer,lock, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-274-8689 has 6 manufacturer part numbers on file: SP24281 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 509570PC6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 180227PC7 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 366910PC3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 180227PC4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-00-595-7237. Verify interchangeability with system specifications before substitution.
Key specifications for SP24281: Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.692 INCHES NOMINAL IN; Material Thickness: 0.036 INCHES NOMINAL IN; Departure From Cited Document: AS MODIFIED BY SURFACE FINISH. 8 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.