The Filter Assembly,fluid, cataloged under National Stock Number 4330-01-330-8201, 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 Pall Industrial Hydraulics Corp. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-330-8201 |
| Primary Part Number | HZ8640A20KTTBL |
| Item Name | Filter Assembly,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Industrial Hydraulics Corp |
| Status | ACTIVE |
| Filtration Rating in Microns | 25.0 ABSOLUTE |
| First Intake Nominal Thread Size | 1.250 INCHES IN |
| Drop Pressure | ERR-060 |
| First Intake Thread Series Designator | NPT |
| Design Type | REUSABLE |
| Temp Rating | 120.0 FAHRENHEIT NOMINAL DEGF |
| First Intake Thread Direction | RIGHT-HAND |
| First Intake Connection Type | THREADED INTERNAL PIPE CENTER |
| Operating Pressure | 45.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | BY-PASS VALVE AND DIFFERENTIAL PRESSURE INDICATOR AND DIFFERENTIAL PRESSURE RELIEF VALVE AND DRAIN PLUG AND SWITCH-OVER VALVE |
| Filtering Element Quantity | 2 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Differential Pressure | ERR-060 |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | IRON BODY |
| Material | RUBBER BUNA N SEAL |
| Material | RESIN SYNTHETIC AND FIBER SYNTHETIC FILTERING MEDIUM |
| Unit Quantity | 2 |
| 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 |
|---|---|
| 23036122 | Rolls-Royce Corporation (USA) |
| HZ8640A20KTTBL PRIMARY | Pall Industrial Hydraulics Corp (USA) |
| Reference | Meaning |
|---|---|
| HZ8640A20KTTB3T | C/1 Advisory reference — outside the item-of-supply concept Pall Industrial Hydraulics Corp |
| HH8640Y258 | 5/1 Secondary reference Pall Industrial Hydraulics Corp |
| HH8640A20UTTBL | 5/9 Secondary reference Pall Industrial Hydraulics Corp |
NSN 4330-01-330-8201 is a Filter Assembly,fluid, manufactured by Pall Industrial Hydraulics Corp, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-330-8201 has 2 manufacturer part numbers on file: 23036122 (Rolls-Royce Corporation), HZ8640A20KTTBL (Pall Industrial Hydraulics Corp).
1 possible match (shared part number, not a government interchangeability claim): 1090-01-336-3599. Verify interchangeability with system specifications before substitution.
Key specifications for HZ8640A20KTTBL: Filtration Rating in Microns: 25.0 ABSOLUTE; First Intake Nominal Thread Size: 1.250 INCHES IN; Drop Pressure: ERR-060; First Intake Thread Series Designator: NPT. 20 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.