The Retainer,packing, cataloged under National Stock Number 5330-00-783-7550, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 10 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 | 5330-00-783-7550 |
| Primary Part Number | RD12444 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Lip Inside Diameter | 0.588 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Cross-Sectional Height | 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | SPECIAL |
| Flanged Body Outside Diameter | 0.432 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN |
| Peripheral Diameter | 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Center Hole Diameter | 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2017 OVERALL |
| Body Recess Depth | 0.088 INCHES MINIMUM AND 0.092 INCHES MAXIMUM 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 |
|---|---|
| RD12444 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
NSN 5330-00-783-7550 is a Retainer,packing, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-783-7550 has 1 manufacturer part number on file: RD12444 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
Key specifications for RD12444: Lip Inside Diameter: 0.588 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Cross-Sectional Height: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Cross-Sectional Shape Style: SPECIAL. 10 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.