The Strainer,sediment, cataloged under National Stock Number 4730-01-440-7581, 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 Core Industries Inc. Dba Mueller Steam Specialty. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-440-7581 |
| Primary Part Number | 2.5 NO.185 CS BASKET STRAINER |
| Item Name | Strainer,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Distance From Bottom of Body to Center of Inlet | 5.438 INCHES NOMINAL IN |
| Temp Rating | 565.0 FAHRENHEIT NOMINAL DEGF |
| Body Height | 6.688 INCHES NOMINAL IN |
| Style Designator | DIVERTED FLOW BASKET STRAINER W/BOLTED COVER |
| Operating Pressure | 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Body Length | 8.000 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Material | STEEL COMP 304 FILTERING MEDIUM |
| Perforation Diameter | 0.020 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 |
|---|---|
| 185 CS 2.50IN | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| 2.5 NO.185 CS BASKET STRAINER PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| Reference | Meaning |
|---|---|
| AN-2.5-185CS-H | D/9 Drawing number reference only Core Industries Inc. Dba Mueller Steam Specialty |
NSN 4730-01-440-7581 is a Strainer,sediment, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-440-7581 has 2 manufacturer part numbers on file: 185 CS 2.50IN (Core Industries Inc. Dba Mueller Steam Specialty), 2.5 NO.185 CS BASKET STRAINER (Core Industries Inc. Dba Mueller Steam Specialty).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-440-7669. Verify interchangeability with system specifications before substitution.
Key specifications for 2.5 NO.185 CS BASKET STRAINER: Distance From Bottom of Body to Center of Inlet: 5.438 INCHES NOMINAL IN; Temp Rating: 565.0 FAHRENHEIT NOMINAL DEGF; Body Height: 6.688 INCHES NOMINAL IN; Style Designator: DIVERTED FLOW BASKET STRAINER W/BOLTED COVER. 9 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.