The Washer,keyway, cataloged under National Stock Number 5310-01-352-7378, 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 7 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 | 5310-01-352-7378 |
| Primary Part Number | 3180999 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Internal Keyway Width | 0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM |
| Material Document and Classification | QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 7.500 INCHES NOMINAL IN |
| Internal Keyway Quantity | 2 |
| Material | NICKEL ALLOY K-500 OVERALL |
| Hole Diameter | 5.625 INCHES MINIMUM AND 5.635 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 |
|---|---|
| 3180999 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5310-01-352-7378 is a Washer,keyway, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-352-7378 has 1 manufacturer part number on file: 3180999 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 3180999: Internal Keyway Width: 0.495 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN; Hardness Rating: 24.0 ROCKWELL C MINIMUM; Material Document and Classification: QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 7.500 INCHES NOMINAL IN. 7 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.