The Flange,pipe, cataloged under National Stock Number 4730-01-183-9727, 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. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-183-9727 |
| Primary Part Number | 7-217221106 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Flange Diameter | 2.130 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.876 INCHES IN |
| Flange Section Style | PLAIN FACE, RAISED NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.165 INCHES NOMINAL IN |
| Neck Height | 0.125 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 1.100 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 |
| Thickness | 0.125 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 | X |
| Part Number | Manufacturer |
|---|---|
| 7-217221106 | W Machine Works Inc (USA) |
| 7-217221106 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-217221106 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 4730-01-183-9727 is a Flange,pipe, manufactured by The Boeing Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-183-9727 has 2 manufacturer part numbers on file: 7-217221106 (W Machine Works Inc), 7-217221106 (The Boeing Company).
Key specifications for 7-217221106: Flange Diameter: 2.130 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.876 INCHES IN; Flange Section Style: PLAIN FACE, RAISED NECK. 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.