The Filter,fluid, cataloged under National Stock Number 4330-01-162-2763, 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 Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 18 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-162-2763 |
| Primary Part Number | B-2139 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Filtering Media Design | SINTERED SINGLE FILTERING MEDIA RESPONSE |
| First Discharge Connection Type | UNTHREADED INTERNAL TUBE LINE |
| First Intake Nominal Thread Size | 0.438 INCHES IN |
| First Intake Thread Series Designator | UNF |
| Design Type | NONREUSABLE |
| Body Outside Diameter | 1.000 INCHES NOMINAL IN |
| First Discharge Nominal Inside Diameter | 0.635 INCHES IN |
| First Intake Thread Direction | RIGHT-HAND |
| First Intake Connection Type | THREADED EXTERNAL TUBE LINE |
| First Intake Thread Class | 2A A |
| Style Designator | INLINE (HYDRAULIC) |
| Filtering Element Quantity | 1 |
| Body Length | 2.000 INCHES NOMINAL IN |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Surface Treatment | IRIDIUM BODY |
| Material | ALUMINUM BODY |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION LINE |
| 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 |
|---|---|
| B-2139 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4330-01-162-2763 is a Filter,fluid, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-162-2763 has 1 manufacturer part number on file: B-2139 (Howell Laboratories Inc Dba Howell Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-194-1666. Verify interchangeability with system specifications before substitution.
Key specifications for B-2139: Filtering Media Design: SINTERED SINGLE FILTERING MEDIA RESPONSE; First Discharge Connection Type: UNTHREADED INTERNAL TUBE LINE; First Intake Nominal Thread Size: 0.438 INCHES IN; First Intake Thread Series Designator: UNF. 18 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.