The Washer,key, cataloged under National Stock Number 5310-00-062-9566, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Cummins Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-062-9566 |
| Primary Part Number | 139950 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Overall Distance Including Keys | 1.438 INCHES NOMINAL IN |
| External Prebent Key Width | 0.500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.562 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 |
|---|---|
| 139950 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10395030 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-00-062-9566 is a Washer,key, manufactured by Cummins Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-062-9566 has 1 manufacturer part number on file: 139950 (Cummins Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5305-00-283-0373, 6680-01-393-9011. Verify interchangeability with system specifications before substitution.
Key specifications for 139950: Overall Distance Including Keys: 1.438 INCHES NOMINAL IN; External Prebent Key Width: 0.500 INCHES NOMINAL IN; Material: STEEL OVERALL; Hole Diameter: 0.562 INCHES NOMINAL IN. 4 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.