The Retainer,packing, cataloged under National Stock Number 5330-00-004-4953, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-00-004-4953 |
| Primary Part Number | A51P20569-11 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Outer Groove Depth | 0.074 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.437 INCHES NOMINAL IN |
| Body Recess Diameter | 1.273 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/6 T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SPECIAL |
| Flanged Body Outside Diameter | 1.997 INCHES NOMINAL IN |
| Peripheral Diameter | 2.500 INCHES NOMINAL IN |
| Recess Diameter | 2.281 INCHES NOMINAL IN |
| Center Hole Diameter | 1.127 INCHES MINIMUM AND 1.130 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Body Recess Depth | 0.188 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A51P20569-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51P20569-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51P20569-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5330-00-004-4953 is a Retainer,packing, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-004-4953 has 1 manufacturer part number on file: A51P20569-11 (Northrop Grumman Systems Corporation).
Key specifications for A51P20569-11: Outer Groove Depth: 0.074 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN; Cross-Sectional Height: 0.437 INCHES NOMINAL IN; Body Recess Diameter: 1.273 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-225/6 T851 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.