The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-00-654-2347, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-654-2347 |
| Primary Part Number | 540905-97 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Pressure Rating | 300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Strainer Type and Quantity | 2 SCREEN |
| Design Type | STRAIGHT |
| Material Document and Classification | AMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING SCREENING |
| Material | STEEL COMP 304 BODY |
| Orifice Diameter | 0.023 INCHES NOMINAL IN |
| End Connection Similarity | NOT IDENTICAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 540905-97 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4730-00-654-2347 is a Restrictor Unit,fluid Flow, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-654-2347 has 1 manufacturer part number on file: 540905-97 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 540905-97: Pressure Rating: 300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Strainer Type and Quantity: 2 SCREEN; Design Type: STRAIGHT; Material Document and Classification: AMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED. 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.
NSN 4730-00-654-2347 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.