The Washer,key, cataloged under National Stock Number 5310-01-725-4747, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Whittet-Higgins Company. Government technical data includes 14 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 | 5310-01-725-4747 |
| Primary Part Number | MS-19070-283 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Whittet-Higgins Company |
| Status | ACTIVE |
| Internal Straight Key Width | 0.590 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2700 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 5.438 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | MIL-DTL-21338B NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 6.576 INCHES NOMINAL IN |
| Material Thickness | 0.132 INCHES NOMINAL IN |
| External Key Quantity | 20 |
| External Prebent Key Angle | 45.0 DEGREES NOMINAL |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.520 INCHES NOMINAL IN |
| Material | STEEL COMP 304 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 5.582 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 |
|---|---|
| MS-19070-283 PRIMARY | Whittet-Higgins Company (USA) |
NSN 5310-01-725-4747 is a Washer,key, manufactured by Whittet-Higgins Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-725-4747 has 1 manufacturer part number on file: MS-19070-283 (Whittet-Higgins Company).
Key specifications for MS-19070-283: Internal Straight Key Width: 0.590 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2700 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 5.438 INCHES NOMINAL IN; Style Designator: KEY. 14 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.