The Retainer,packing, cataloged under National Stock Number 5330-01-273-4590, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-273-4590 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Attachment Hole Diameter | 0.250 INCHES NOMINAL IN |
| Attachment Feature Quantity | 8 |
| Cross-Sectional Height | 1.156 INCHES NOMINAL IN |
| Inner Groove Depth | 0.225 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SPECIAL |
| Angle | 90.0 DEGREES NOMINAL |
| Attachment Feature Circle Diameter | 5.379 INCHES MINIMUM AND 5.381 INCHES MAXIMUM SINGLE CIRCLE IN |
| Flanged Body Outside Diameter | 4.500 INCHES NOMINAL IN |
| Peripheral Diameter | 6.125 INCHES NOMINAL IN |
| Inner Groove Width | 0.225 INCHES NOMINAL IN |
| Center Hole Diameter | 3.675 INCHES MINIMUM AND 3.685 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Attachment Method | ROUND HOLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 77731-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-273-4590 is a Retainer,packing, classified under FSC 5330, Packing and Gasket Materials. Status: active.
Key specifications for 5330-01-273-4590: Attachment Hole Diameter: 0.250 INCHES NOMINAL IN; Attachment Feature Quantity: 8; Cross-Sectional Height: 1.156 INCHES NOMINAL IN; Inner Groove Depth: 0.225 INCHES NOMINAL IN. 14 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.