The Desiccant Container,dehumidifier, cataloged under National Stock Number 4440-01-606-8731, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Drytech Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-606-8731 |
| Primary Part Number | 1DT9900 |
| Item Name | Desiccant Container,dehumidifier |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Drytech Inc |
| Status | ACTIVE |
| Desiccant Material | MOLECULAR SIEVES, TYPE 4A, 8 X 12 MESH BEADS A |
| Overall Diameter | 1.62 INCHES NOMINAL IN |
| Material Document and Classification | L-P-393, FORM 1 FED SPEC SINGLE MATERIAL RESPONSE CONTAINER |
| Material | PLASTIC POLYPROPYLENE AND ALUMINUM ALLOY CONTAINER |
| Desiccant | INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1DT9900 PRIMARY | Drytech Inc (USA) |
| Reference | Meaning |
|---|---|
| ES9959-01 | 3/2 Design control — primary reference U.S. Government activity |
| ES9959 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4440-01-606-8731 is a Desiccant Container,dehumidifier, manufactured by Drytech Inc, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-01-606-8731 has 1 manufacturer part number on file: 1DT9900 (Drytech Inc).
Key specifications for 1DT9900: Desiccant Material: MOLECULAR SIEVES, TYPE 4A, 8 X 12 MESH BEADS A; Overall Diameter: 1.62 INCHES NOMINAL IN; Material Document and Classification: L-P-393, FORM 1 FED SPEC SINGLE MATERIAL RESPONSE CONTAINER; Overall Length: 5.80 INCHES NOMINAL IN. 5 specifications are 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.