The Hydrocarbon Absorpttion Unit, cataloged under National Stock Number 4330-01-538-3558, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 4330-01-538-3558 |
| Primary Part Number | 034-005559-0001 |
| Item Name | Hydrocarbon Absorpttion Unit |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| 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 |
|---|---|
| 034-005559-0001 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| BLD9400 | Brownell Ltd (GBR) |
| BLD9400 | Enviro-Tronics Foshan Australia Pty Ltd (AUS) |
NSN 4330-01-538-3558 is a Hydrocarbon Absorpttion Unit, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-538-3558 has 3 manufacturer part numbers on file: 034-005559-0001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), BLD9400 (Brownell Ltd), BLD9400 (Enviro-Tronics Foshan Australia Pty Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 1680-01-658-2133, 4330-01-669-4344. Verify interchangeability with system specifications before substitution.
Key specifications for 034-005559-0001: Special Features: CYLINDRICAL W/ CONTAINER (RIGID), 100.0 MILLIMETERS NOMINAL, FUEL/OIL, HYDROCARBON MM; Part Name Assigned by Controlling Agency: HYDROCARBON ABSORPTION UNIT. 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.