The Strainer,sediment, cataloged under National Stock Number 4730-01-445-9721, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-445-9721 |
| Primary Part Number | AN-.56-851-J |
| 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 |
| Filtering Media Design | PERFORATED SINGLE FILTERING MEDIA RESPONSE |
| Mounting Hole Quantity | 4 |
| Distance From Bottom of Body to Center of Inlet | 3.250 INCHES NOMINAL IN |
| Distance Between Mounting Hole Centers | 2.380 INCHES NOMINAL IN |
| First Intake Flange Thickness | 0.250 INCHES NOMINAL IN |
| Temp Rating | 150.0 FAHRENHEIT MINIMUM AND 405.0 FAHRENHEIT MAXIMUM DEGF |
| First Intake Flange Outside Diameter | 3.500 INCHES NOMINAL IN |
| First Intake Connection Type | PLAIN FACE FLANGE TOP SIDE |
| Perforation Quantity | 33.0 PER SQUARE INCH |
| Style Designator | Y STRAINER W/BOLTED COVER |
| Mounting Hole Diameter | 0.500 INCHES NOMINAL IN |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| First Intake Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| Body Length | 5.875 INCHES NOMINAL IN |
| First Discharge Flange Outside Diameter | 3.500 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | WATER |
| First Discharge Flange Face Style | PLAIN |
| Material | COPPER ALLOY BODY |
| Material | STEEL COMP 304 SCREENING |
| First Discharge Flange Thickness | 0.250 INCHES NOMINAL IN |
| Perforation Diameter | 0.156 INCHES NOMINAL IN |
| Mounting Type | UNTHREADED HOLE LINE |
| First Intake Flange Face Style | PLAIN |
| First Discharge Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| 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 |
|---|---|
| AN-.56-851-J PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| AN-.50-851-J-5/32P60MESH | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| Reference | Meaning |
|---|---|
| AN-.50-851-J | C/1 Advisory reference — outside the item-of-supply concept Core Industries Inc. Dba Mueller Steam Specialty |
NSN 4730-01-445-9721 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 4730-01-445-9721 has 2 manufacturer part numbers on file: AN-.56-851-J (Core Industries Inc. Dba Mueller Steam Specialty), AN-.50-851-J-5/32P60MESH (Core Industries Inc. Dba Mueller Steam Specialty).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-445-9995. Verify interchangeability with system specifications before substitution.
Key specifications for AN-.56-851-J: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; Mounting Hole Quantity: 4; Distance From Bottom of Body to Center of Inlet: 3.250 INCHES NOMINAL IN; Distance Between Mounting Hole Centers: 2.380 INCHES NOMINAL IN. 25 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.