The Washer,key, cataloged under National Stock Number 5310-01-316-2452, 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 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-316-2452 |
| Primary Part Number | 343903-4 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.060 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.395 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| External Prebent Key Width | 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OVERALL |
| Hole Diameter | 0.189 INCHES NOMINAL 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 |
|---|---|
| 343903-4 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5310-01-316-2452 is a Washer,key, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-316-2452 has 1 manufacturer part number on file: 343903-4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 343903-4: Distance From Centerline to Inside of Prebent Key: 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; External Prebent Key Length: 0.060 INCHES NOMINAL IN; Overall Distance Including Keys: 0.395 INCHES NOMINAL IN; Style Designator: KEY. 9 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.