The Washer,lock, cataloged under National Stock Number 5310-00-274-8686, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-274-8686 |
| Primary Part Number | 438617PC8 |
| 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 | 0.381 INCHES NOMINAL IN |
| Material Thickness | 0.022 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 | 0.195 INCHES MINIMUM AND 0.205 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 |
|---|---|
| 438617PC8 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 299210PC25 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 381637PC30 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 319318PC5 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 268608PC29 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 393955PC11 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| SP24045 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 12Z22PC354 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 407 135 | Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| AN936A10 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-274-8686 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 5310-00-274-8686 has 9 manufacturer part numbers on file: 438617PC8 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 299210PC25 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 381637PC30 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 319318PC5 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 268608PC29 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 4 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-442-9175. Verify interchangeability with system specifications before substitution.
Key specifications for 438617PC8: Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.381 INCHES NOMINAL IN; Material Thickness: 0.022 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.