The Washer,key, cataloged under National Stock Number 5310-00-976-0221, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-976-0221 |
| Primary Part Number | 1537592 |
| 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 |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 0.234 INCHES NOMINAL IN |
| External Prebent Key Length | 0.094 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.250 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| External Prebent Key Width | 0.120 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Hole Diameter | 0.281 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 |
|---|---|
| 1537592 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 6005000033 | Diehl Defence Gmbh & Co. Kg (DEU) |
| 1537592 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 1537592 | 5/9 Secondary reference U.S. Government activity |
| 288-1552 | 5/9 Secondary reference Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions |
NSN 5310-00-976-0221 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 5310-00-976-0221 has 3 manufacturer part numbers on file: 1537592 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 6005000033 (Diehl Defence Gmbh & Co. Kg), 1537592 (General Electric Company).
Key specifications for 1537592: Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 0.234 INCHES NOMINAL IN; External Prebent Key Length: 0.094 INCHES NOMINAL IN; Overall Distance Including Keys: 1.250 INCHES NOMINAL IN. 10 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.