The Strainer,sediment, cataloged under National Stock Number 4730-01-290-4484, 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 Armstrong International Inc Dba Armstrong Machine Works. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-290-4484 |
| Primary Part Number | A1FL-4IN-125 |
| Item Name | Strainer,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Filtering Media Design | PERFORATED SINGLE FILTERING MEDIA RESPONSE |
| Distance From Bottom of Body to Center of Inlet | 9.500 INCHES NOMINAL IN |
| Temp Rating | 150.0 FAHRENHEIT NOMINAL DEGF |
| First Intake Connection Type | PLAIN FACE FLANGE LINE |
| Perforation Quantity | 225.0 PER SQUARE INCH |
| Style Designator | Y STRAINER W/BOLTED COVER |
| Operating Pressure | 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| First Intake Flange Shape Style | ROUND W/UNTHREADED BOLT HOLES |
| Body Length | 14.875 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | WATER |
| Material | STEEL COMP 304 FILTERING MEDIUM |
| Material | IRON BODY |
| Perforation Diameter | 0.045 INCHES NOMINAL IN |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION LINE |
| First Intake Flange Face Style | PLAIN |
| 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 |
|---|---|
| A1FL-4IN-125 PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| SM-603-D-4IN | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| Reference | Meaning |
|---|---|
| SM-603-D | D/9 Drawing number reference only Armstrong International Inc Dba Armstrong Machine Works |
NSN 4730-01-290-4484 is a Strainer,sediment, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-290-4484 has 2 manufacturer part numbers on file: A1FL-4IN-125 (Armstrong International Inc Dba Armstrong Machine Works), SM-603-D-4IN (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for A1FL-4IN-125: Filtering Media Design: PERFORATED SINGLE FILTERING MEDIA RESPONSE; Distance From Bottom of Body to Center of Inlet: 9.500 INCHES NOMINAL IN; Temp Rating: 150.0 FAHRENHEIT NOMINAL DEGF; First Intake Connection Type: PLAIN FACE FLANGE LINE. 16 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.