The Strainer,sediment, cataloged under National Stock Number 4730-01-251-8486, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-251-8486 |
| Primary Part Number | AN-1.25-125B-A |
| 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 |
| Distance From Bottom of Body to Center of Inlet | 6.500 INCHES NOMINAL IN |
| First Intake Nominal Thread Size | 1.250 INCHES IN |
| First Intake Thread Series Designator | NPT |
| First Intake Thread Direction | RIGHT-HAND |
| Body Height | 9.500 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL PIPE LINE |
| Perforation Quantity | 225.0 PER SQUARE INCH |
| Style Designator | DIVERTED FLOW BASKET STRAINER W/CLAMPED COVER |
| Operating Pressure | 225.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | DRAIN PLUG |
| Body Length | 6.312 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | FUEL/OIL, HYDROCARBON AND GAS AND WATER |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY FILTERING MEDIUM |
| Perforation Diameter | 0.045 INCHES NOMINAL IN |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION LINE |
| 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-1.25-125B-A PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| Reference | Meaning |
|---|---|
| 125B-1.25IN-3/6 | C/1 Advisory reference — outside the item-of-supply concept Core Industries Inc. Dba Mueller Steam Specialty |
NSN 4730-01-251-8486 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 4730-01-251-8486 has 1 manufacturer part number on file: AN-1.25-125B-A (Core Industries Inc. Dba Mueller Steam Specialty).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-255-1412. Verify interchangeability with system specifications before substitution.
Key specifications for AN-1.25-125B-A: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; Distance From Bottom of Body to Center of Inlet: 6.500 INCHES NOMINAL IN; First Intake Nominal Thread Size: 1.250 INCHES IN; First Intake Thread Series Designator: NPT. 18 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.