The Reducer Body,tube, cataloged under National Stock Number 4730-01-161-4485, 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 The Boeing Company Div Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-161-4485 |
| Primary Part Number | 7M637NB-D8-6 |
| Item Name | Reducer Body,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Second End Seat Angle in Deg | 37.0 |
| First End Seat Angle in Deg | 37.0 |
| Criticality Code Justification | FEAT |
| Style Designator | REDUCER BODY |
| Thread Direction | RIGHT-HAND |
| Thread Size | 9/16-18 |
| Screw Thread Series Designator | UNF |
| Flange Width | 0.219 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Material | ALUMINUM ALLOY 2014 |
| Flange Outside Diameter | 0.682 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 7M637NB-D8-6 PRIMARY | The Boeing Company Div Defense (USA) |
| 7M637NB-D8-6 | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| 7M637NB-D8-6 | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| 7M637NB-D8-6 | Nelson Aero Space, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10108828 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 7M637NB-D8-6 | 5/9 Secondary reference Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company |
| 7M637NB-D8-6 | 5/9 Secondary reference Faber Enterprises, Inc. Div Faber Enterprise Inc |
NSN 4730-01-161-4485 is a Reducer Body,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-161-4485 has 4 manufacturer part numbers on file: 7M637NB-D8-6 (The Boeing Company Div Defense), 7M637NB-D8-6 (Sps Technologies, Llc Dba Airdrome Precision Components), 7M637NB-D8-6 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply), 7M637NB-D8-6 (Nelson Aero Space, Inc.).
Key specifications for 7M637NB-D8-6: Second End Seat Angle in Deg: 37.0; First End Seat Angle in Deg: 37.0; Criticality Code Justification: FEAT; Style Designator: REDUCER BODY. 11 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.