The Retainer,packing, cataloged under National Stock Number 5330-00-008-3619, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-008-3619 |
| Primary Part Number | A51M21506-11 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.550 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.281 INCHES NOMINAL IN |
| Rim Surface Width | 0.098 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | FLANGE |
| Flanged Body Outside Diameter | 1.363 INCHES NOMINAL IN |
| Peripheral Diameter | 2.500 INCHES NOMINAL IN |
| Center Hole Diameter | 0.250 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 5456 OVERALL |
| 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 |
|---|---|
| A51M21506-11 | Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp (USA) |
| Reference | Meaning |
|---|---|
| A51M21506-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51M21506-11 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| A51M21506-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 5330-00-008-3619 is a Retainer,packing, manufactured by Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-008-3619 has 1 manufacturer part number on file: A51M21506-11 (Howe Machine & Tool Corp. Dba Howe Machine & Tool Corp).
Key specifications for A51M21506-11: Cross-Sectional Thickness: 0.550 INCHES NOMINAL IN; Cross-Sectional Height: 0.281 INCHES NOMINAL IN; Rim Surface Width: 0.098 INCHES NOMINAL IN; Cross-Sectional Shape Style: FLANGE. 8 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.