The Washer,key, cataloged under National Stock Number 5310-00-074-2124, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rotair Aerospace Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-074-2124 |
| Primary Part Number | 209394 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rotair Aerospace Corp |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.181 INCHES NOMINAL IN |
| External Prebent Key Length | 0.067 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.422 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| External Prebent Key Width | 0.063 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.131 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 |
|---|---|
| 209394 | Rotair Aerospace Corp (USA) |
| Reference | Meaning |
|---|---|
| 209394 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-074-2124 is a Washer,key, manufactured by Rotair Aerospace Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-074-2124 has 1 manufacturer part number on file: 209394 (Rotair Aerospace Corp).
Key specifications for 209394: Distance From Centerline to Inside of Prebent Key: 0.181 INCHES NOMINAL IN; External Prebent Key Length: 0.067 INCHES NOMINAL IN; Overall Distance Including Keys: 0.422 INCHES NOMINAL IN; Style Designator: KEY. 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.