The Drier,air-Gas,desiccant, cataloged under National Stock Number 4440-01-644-8319, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-644-8319 |
| Primary Part Number | 25953 |
| Item Name | Drier,air-Gas,desiccant |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco |
| Status | ACTIVE |
| 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 |
|---|---|
| 25953 PRIMARY | Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco (USA) |
| Reference | Meaning |
|---|---|
| 25953 | 5/9 Secondary reference Proliance Consulting, Llc |
NSN 4440-01-644-8319 is a Drier,air-Gas,desiccant, manufactured by Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-01-644-8319 has 1 manufacturer part number on file: 25953 (Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco).
3 possible matches (shared part number, not a government interchangeability claim): 1560-01-715-1443, 1560-01-716-3101, 1560-01-728-1417. Verify interchangeability with system specifications before substitution.
Key specifications for 25953: Overall Length: 1.000 INCHES NOMINAL IN; Special Features: GBBU; Part Name Assigned by Controlling Agency: AIR DRYER. 0 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.