The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-261-4609, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 14 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 | 4730-01-261-4609 |
| Primary Part Number | 4067798 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Length | 1.420 INCHES MINIMUM AND 1.480 INCHES MAXIMUM IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED |
| Thread Length | 0.309 INCHES NOMINAL FIRST PROVISION IN |
| Thread Length | 0.709 INCHES NOMINAL SECOND PROVISION IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.460 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 0.4375-20 SECOND PROVISION |
| Thread Size Designator | 0.5625-18 FIRST PROVISION |
| Thread Class | 3A LOCATION NOT OTHERWISE SPECIFIED A |
| Material | TITANIUM ALLOY UNS R56400 |
| Orifice Diameter | 0.168 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 4067798 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 4730-01-261-4609 is a Restrictor,fluid Flow, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-261-4609 has 1 manufacturer part number on file: 4067798 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4067798: Length: 1.420 INCHES MINIMUM AND 1.480 INCHES MAXIMUM IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED. 14 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 4730-01-261-4609 has DEMIL Code Q. 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.