The Reducer,tube, cataloged under National Stock Number 4730-01-191-6440, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-191-6440 |
| Primary Part Number | AE16566-6-4 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Connection Style | CUSHION SEAL (TUBE) SECOND END |
| Connection Style | CUSHION SEAL (TUBE) FIRST END |
| Nominal Overall Length | 1.273 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Material Document and Classification | AMS4965,TI-6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.562 INCHES FIRST END BULKHEAD IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Thread Class | 2A FIRST END BULKHEAD A |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 24 SECOND END |
| Thread Quantity Per Inch | 20 FIRST END |
| Thread Quantity Per Inch | 20 FIRST END BULKHEAD |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNJS ALL ENDS |
| Thread Series Designator | UNJS FIRST END BULKHEAD |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| AE16566-6-4 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| R45118T-0604 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| 7M529T0604 PRIMARY | The Boeing Company Div Defense (USA) |
| AP301T0604 PRIMARY | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
NSN 4730-01-191-6440 is a Reducer,tube, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-191-6440 has 4 manufacturer part numbers on file: AE16566-6-4 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), R45118T-0604 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), 7M529T0604 (The Boeing Company Div Defense), AP301T0604 (Sps Technologies, Llc Dba Airdrome Precision Components).
Key specifications for AE16566-6-4: Connection Style: CUSHION SEAL (TUBE) SECOND END; Connection Style: CUSHION SEAL (TUBE) FIRST END; Nominal Overall Length: 1.273 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END BULKHEAD. 21 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.