The Strainer,sediment, cataloged under National Stock Number 4730-01-559-0371, 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 Staples & Pfeiffer, Inc.. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-559-0371 |
| Primary Part Number | 123YF-3.50-15O-.250M |
| Item Name | Strainer,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Staples & Pfeiffer, Inc. |
| Status | ACTIVE |
| Filtering Media Design | PERFORATED SINGLE FILTERING MEDIA RESPONSE |
| First Intake Connection Type | PLAIN FACE FLANGE SIDE |
| Perforation Quantity | 8.0 PER SQUARE INCH |
| Style Designator | TWIN STRAINER W/CLAMPED COVER |
| Material Document and Classification | 31846 - ASTM B 61 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | WATER |
| Material | COPPER AND NICKEL ALLOY BODY |
| Material | NICKEL AND COPPER ALLOY FILTERING MEDIUM |
| Perforation Diameter | 0.250 INCHES NOMINAL 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 |
|---|---|
| 123YF-3.50-15O-.250M PRIMARY | Staples & Pfeiffer, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 631A | 5/1 Secondary reference Staples & Pfeiffer, Inc. |
NSN 4730-01-559-0371 is a Strainer,sediment, manufactured by Staples & Pfeiffer, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-559-0371 has 1 manufacturer part number on file: 123YF-3.50-15O-.250M (Staples & Pfeiffer, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-559-0388. Verify interchangeability with system specifications before substitution.
Key specifications for 123YF-3.50-15O-.250M: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; First Intake Connection Type: PLAIN FACE FLANGE SIDE; Perforation Quantity: 8.0 PER SQUARE INCH; Style Designator: TWIN STRAINER W/CLAMPED COVER. 11 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.