The Head,fluid Filter, cataloged under National Stock Number 4330-01-340-1678, 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 Aeropower Corp Sub of Pall Corp Mectron Industries Div. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-340-1678 |
| Primary Part Number | WC-00558-12D1A |
| Item Name | Head,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| Status | ACTIVE |
| Inlet Port Type | THREADED FEMALE, GASKET SEAL |
| Usage Design | ONE SEDIMENT BOWL |
| Outlet Thread Class | 2B |
| Inlet Nominal Thread Size | 0.625 INCHES IN |
| Outlet Port Type | THREADED FEMALE, GASKET SEAL |
| Outlet Thread Direction | RIGHT-HAND |
| Mounting Method | THREAD BOWL |
| Outlet Thread Series Designator | UNF |
| Mounting Bolt Hole | NOT PROVIDED |
| Thread Direction | RIGHT-HAND INLET |
| Valve | NOT INCLUDED |
| Inlet Thread Series Designator | UNF |
| Bowl Mounting Hole Diameter | 1.516 INCHES NOMINAL IN |
| Filter Element | NOT INCLUDED |
| Material | STEEL CORROSION RESISTING |
| Inlet Thread Class | 2B |
| Outlet Nominal Thread Size | 0.625 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WC-00558-12D1A PRIMARY | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
NSN 4330-01-340-1678 is a Head,fluid Filter, manufactured by Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-340-1678 has 1 manufacturer part number on file: WC-00558-12D1A (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div).
Key specifications for WC-00558-12D1A: Overall Height: 3.110 INCHES NOMINAL IN; Inlet Port Type: THREADED FEMALE, GASKET SEAL; Usage Design: ONE SEDIMENT BOWL; Outlet Thread Class: 2B. 17 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.
NSN 4330-01-340-1678 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.