The Head,fluid Filter, cataloged under National Stock Number 4330-01-178-3208, 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 Walton Tool & Manufacturing Co Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-178-3208 |
| Primary Part Number | FF-101-2 |
| Item Name | Head,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Walton Tool & Manufacturing Co Inc |
| Status | ACTIVE |
| Inlet Port Type | THREADED FEMALE, PLAIN |
| Usage Design | ONE SEDIMENT BOWL |
| Inlet Nominal Thread Size | 0.500 INCHES IN |
| Outlet Port Type | THREADED FEMALE, PLAIN |
| Outlet Thread Direction | RIGHT-HAND |
| Mounting Method | BOLT BOWL |
| Outlet Thread Series Designator | NPT |
| Mounting Bolt Hole | PROVIDED |
| Thread Direction | RIGHT-HAND INLET |
| Valve | NOT INCLUDED |
| Inlet Thread Series Designator | NPT |
| Filter Element | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Outlet Nominal Thread Size | 0.500 INCHES IN |
| 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 |
|---|---|
| FF-101-0 ITEM 2 | Walton Tool & Manufacturing Co Inc (USA) |
| FF-101-2 PRIMARY | Walton Tool & Manufacturing Co Inc (USA) |
| FF-101 ITEM 2 | Walton Tool & Manufacturing Co Inc (USA) |
| Reference | Meaning |
|---|---|
| FF-101 | D/9 Drawing number reference only Walton Tool & Manufacturing Co Inc |
NSN 4330-01-178-3208 is a Head,fluid Filter, manufactured by Walton Tool & Manufacturing Co Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-178-3208 has 3 manufacturer part numbers on file: FF-101-0 ITEM 2 (Walton Tool & Manufacturing Co Inc), FF-101-2 (Walton Tool & Manufacturing Co Inc), FF-101 ITEM 2 (Walton Tool & Manufacturing Co Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4330-01-180-0962, 4330-01-216-1164. Verify interchangeability with system specifications before substitution.
Key specifications for FF-101-2: Inlet Port Type: THREADED FEMALE, PLAIN; Usage Design: ONE SEDIMENT BOWL; Inlet Nominal Thread Size: 0.500 INCHES IN; Outlet Port Type: THREADED FEMALE, PLAIN. 14 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.