The Washer,key, cataloged under National Stock Number 5310-00-062-6028, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-062-6028 |
| Primary Part Number | 444971 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| External Key Quantity | 8 |
| Internal Prebent Key Length | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.104 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.390 INCHES MINIMUM AND 0.400 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 |
|---|---|
| 444971 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 444971 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 444971 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-062-6028 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-062-6028 has 2 manufacturer part numbers on file: 444971 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 444971 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 444971: Internal Prebent Key Width: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.