The Dehydrator Unit,nonreactivating, cataloged under National Stock Number 4440-01-375-0953, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-375-0953 |
| Primary Part Number | 6438-G501 |
| Item Name | Dehydrator Unit,nonreactivating |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Body Overall Length | 23.500 INCHES NOMINAL IN |
| Body Overall Height | 56.000 INCHES NOMINAL IN |
| Body Overall Width | 29.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5295 MK III | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| D6438 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 6438-G501 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 6344 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4440-01-375-0953 is a Dehydrator Unit,nonreactivating, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-01-375-0953 has 4 manufacturer part numbers on file: 5295 MK III (Howell Laboratories Inc Dba Howell Laboratories Inc), D6438 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6438-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6344 (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 6438-G501: Body Overall Length: 23.500 INCHES NOMINAL IN; End Item Identification: DEHYRATOR FILTER CONDENSER; Body Overall Height: 56.000 INCHES NOMINAL IN; Body Overall Width: 29.500 INCHES NOMINAL IN. 3 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.