The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-577-3259, is classified within Federal Supply Class 5340 (Hardware, Commercial) 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 7 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 | 5340-00-577-3259 |
| Primary Part Number | RA21338 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Design Type | THREADED |
| Overall Diameter | 0.822 INCHES NOMINAL IN |
| Thread Class | 3B |
| Material | PLASTIC, POLYETHYLENE (PP) |
| Thread Size and Series/type Designator | 0.750-16 UNF |
| Inside Diameter Length | 0.671 INCHES NOMINAL IN |
| Round Cap Outside Surface Condition | RIBBED |
| 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 |
|---|---|
| RA21338 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
NSN 5340-00-577-3259 is a Cap,protective,dust and Moisture, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-577-3259 has 1 manufacturer part number on file: RA21338 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
Key specifications for RA21338: Design Type: THREADED; Overall Diameter: 0.822 INCHES NOMINAL IN; Special Features: PORT DIA 0.375 IN. NOM IN; Thread Class: 3B. 7 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.