The Washer,key, cataloged under National Stock Number 5310-00-004-7048, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-004-7048 |
| Primary Part Number | A51P60306-11 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.187 INCHES NOMINAL IN |
| Split Key Length | 0.219 INCHES NOMINAL IN |
| External Prebent Key Length | 0.128 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.505 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| External Tapered Key Width | 0.411 INCHES NOMINAL IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| External Key Quantity | 1 |
| External Prebent Key Width | 0.500 INCHES NOMINAL IN |
| Material | STEEL COMP 321 OVERALL |
| Angle Between External Keys | 60.0 DEGREES NOMINAL |
| Hole Diameter | 0.188 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 |
|---|---|
| A51P60306-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51P60306-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51P60306-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5310-00-004-7048 is a Washer,key, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-004-7048 has 1 manufacturer part number on file: A51P60306-11 (Northrop Grumman Systems Corporation).
Key specifications for A51P60306-11: Distance From Centerline to Inside of Prebent Key: 0.187 INCHES NOMINAL IN; Split Key Length: 0.219 INCHES NOMINAL IN; External Prebent Key Length: 0.128 INCHES NOMINAL IN; Overall Distance Including Keys: 0.505 INCHES NOMINAL IN. 13 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.