The Reducer,tube, cataloged under National Stock Number 4730-01-220-9165, 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 Nelson Aero Space, Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-220-9165 |
| Primary Part Number | 716529-3 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Nelson Aero Space, Inc. |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 CAP |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.060 INCHES SECOND END IN |
| Nominal Overall Length | 1.260 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.484 INCHES SECOND END IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Class | 3A FIRST END A |
| Material | ALUMINUM ALLOY AND COPPER ALLOY OVERALL |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| 716529-3 | Raytheon Company Div Rmd Strategic (USA) |
| 716529-3 PRIMARY | Nelson Aero Space, Inc. (USA) |
| 716529-3 PRIMARY | Aerofit, Llc (USA) |
| Reference | Meaning |
|---|---|
| 716529 | 7/1 Vendor item drawing reference Raytheon Company Div Rmd Strategic |
| 716529-3 | 5/9 Secondary reference Modern Machine Works, Inc. Dba Modern Machine Works |
| 716529-3 | 5/9 Secondary reference United Supply Co Inc |
NSN 4730-01-220-9165 is a Reducer,tube, manufactured by Nelson Aero Space, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-220-9165 has 3 manufacturer part numbers on file: 716529-3 (Raytheon Company Div Rmd Strategic), 716529-3 (Nelson Aero Space, Inc.), 716529-3 (Aerofit, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-244-6028. Verify interchangeability with system specifications before substitution.
Key specifications for 716529-3: Furnished Items and Quantity: 1 CAP; Connection Style: PLAIN (TUBE) SECOND END; Connection Style: FLARED (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.060 INCHES SECOND END IN. 15 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.