The Flange,pipe, cataloged under National Stock Number 4730-01-379-3757, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-379-3757 |
| Primary Part Number | 72A356606-2001 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange End Radius | 2.070 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR PS13001 TYPE 1 MFR REF SINGLE TREATMENT RESPONSE |
| Flange Section Style | RAISED AND RECESSED FACE, RAISED NECK |
| Style Designator | OVAL, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.213 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE |
| Recess Depth | 2.520 INCHES NOMINAL IN |
| Flange Length | 4.200 INCHES NOMINAL IN |
| Nominal Thread Size | 1.500 INCHES IN |
| Recess Diameter | 0.213 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 1.440 INCHES NOMINAL IN |
| Raised Face Diameter | 0.312 INCHES NOMINAL IN |
| Raised Face Height | 0.750 INCHES NOMINAL IN |
| Screw Thread Series Designator | UN |
| Surface Treatment | PASSIVATE |
| Flange Width | 2.520 INCHES NOMINAL IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.750 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 |
|---|---|
| 72A356606-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 72A356606-2001 | MB Aerospace Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 72A356606 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-379-3757 is a Flange,pipe, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-379-3757 has 2 manufacturer part numbers on file: 72A356606-2001 (The Boeing Company Div Defense), 72A356606-2001 (MB Aerospace Ltd).
Key specifications for 72A356606-2001: Flange End Radius: 2.070 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR PS13001 TYPE 1 MFR REF SINGLE TREATMENT RESPONSE; Flange Section Style: RAISED AND RECESSED FACE, RAISED NECK. 22 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.