The Membrane Element Assembly,dehydr, cataloged under National Stock Number 4440-01-487-1901, 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. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-487-1901 |
| Primary Part Number | 8501-G501 |
| Item Name | Membrane Element Assembly,dehydr |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| 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 |
|---|---|
| 8501-G501 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 7169-G501 | 5/9 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
NSN 4440-01-487-1901 is a Membrane Element Assembly,dehydr, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-01-487-1901 has 1 manufacturer part number on file: 8501-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 8501-G501: Special Features: ASSEMBLY CONSISTS OF: 2 MEMBRANE ELEMENTS P/N 7164-01, 4 O-RINGS P/N M83248/2-257, 2 SPRINGS P/N 1015-73, 2 HOUSING CLAMPS P/N 6170-01, 2 O-RINGS, PURGE PORT UPPER P/N M83248/2-121, AND 2 O-RINGS, PURGE PORT LOWER P/N M83248/2-030; End Item Identification: BULKHEAD MEMBRANE AIR DEHYDRATOR (MODEL 7162). 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.