The Cover,fluid Filter, cataloged under National Stock Number 4330-01-332-0259, 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 Haywardindl. Products, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-332-0259 |
| Primary Part Number | ST31157 |
| Item Name | Cover,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| ST-TA-F-B REVC-PC-2 2IN | Haywardindl. Products, Inc. (USA) |
| ST31157 PRIMARY | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST-TA-F-B | D/9 Drawing number reference only Haywardindl. Products, Inc. |
NSN 4330-01-332-0259 is a Cover,fluid Filter, manufactured by Haywardindl. Products, Inc., classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-332-0259 has 2 manufacturer part numbers on file: ST-TA-F-B REVC-PC-2 2IN (Haywardindl. Products, Inc.), ST31157 (Haywardindl. Products, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4330-01-333-8385, 4730-01-335-4425, 4730-01-335-4427. Verify interchangeability with system specifications before substitution.
Key specifications for ST31157: Material: COPPER ALLOY. 1 specification is 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.