The Strainer,sediment, cataloged under National Stock Number 4730-01-331-6664, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Haywardindl. Products, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-331-6664 |
| Primary Part Number | ST50F-B-150 8IN 1/8CUNI |
| Item Name | Strainer,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Filtering Media Design | PERFORATED SINGLE FILTERING MEDIA RESPONSE |
| Body Width | 21.500 INCHES NOMINAL IN |
| First Intake Connection Type | PLAIN FACE FLANGE LINE |
| Style Designator | TWIN STRAINER W/CLAMPED COVER |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FILTERING MEDIUM |
| 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 |
|---|---|
| ST50F-B-150 8IN 1/8CUNI PRIMARY | Haywardindl. Products, Inc. (USA) |
| ST50F-B-150 8IN | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST50-F-B-150 | D/9 Drawing number reference only Haywardindl. Products, Inc. |
NSN 4730-01-331-6664 is a Strainer,sediment, manufactured by Haywardindl. Products, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-331-6664 has 2 manufacturer part numbers on file: ST50F-B-150 8IN 1/8CUNI (Haywardindl. Products, Inc.), ST50F-B-150 8IN (Haywardindl. Products, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-331-6670, 4820-01-332-0214. Verify interchangeability with system specifications before substitution.
Key specifications for ST50F-B-150 8IN 1/8CUNI: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; Body Width: 21.500 INCHES NOMINAL IN; First Intake Connection Type: PLAIN FACE FLANGE LINE; Style Designator: TWIN STRAINER W/CLAMPED COVER. 6 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.