The Desiccant Container,dehumidifier, cataloged under National Stock Number 4440-01-559-6819, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-559-6819 |
| Item Name | Desiccant Container,dehumidifier |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Status | ACTIVE |
| Desiccant Material | SILICA GEL AND MOLECULAR SIEVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3181728-3 | 3/2 Design control — primary reference U.S. Government activity |
| 3181728-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4440-01-559-6819 is a Desiccant Container,dehumidifier, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
Key specifications for 4440-01-559-6819: Desiccant Material: SILICA GEL AND MOLECULAR SIEVE; Special Features: AKA AIR DRYER ASSEMBLY. USED ON THE 50 KW TRANSMITTER USED ON THE NAVY P3 AND NEW MMA AIRCRAFT AND OTHER PROGRAMS. ALSO USED ON THE 15 KW TRANSMITTERS ON MANY INTERNATIONAL PROGRAMS. ITEM IS A CONTAINER FILLED WITH DEHYDRATING, DRYING MATERIAL, SILICA GEL AND MOLECULAR SIEVE AND IS REPLACEABLE BY REMOVING THE REAR FITTING OF THE CONTAINER. PART OF THE MIXTURE CONTAINS A COLOR INDICATING MATERIAL, COBALT BLUE OR EUROPEAN ORANGE, TO INDICATE THE CONDITION OF THE DRYER MATERIAL. THE ASSEMBLY PLUGS DIRECTLY INTO THE FRONT OF THE TRANSMITTERS AND IS HELD IN PLACE BY TWO FASTENING SCREWS. THE FRONT OF THE DRYER HAS AN AN4 FITTING WHERE A HOSE CAN BE FITTED AND HOOKED TO OTHER DEHYDRATOR CONTAINERS IF NEEDED.; End Item Identification: P3 AND MMA AIRCRAFT. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.