The Flange,pipe, cataloged under National Stock Number 4730-01-082-3442, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-082-3442 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 0.531 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.500 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.250 INCHES NOMINAL IN |
| Operating Pressure and Type | 3000.0 POUNDS PER SQUARE INCH (PSI) SALT WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | RECTANGULAR, WITH BOLT HOLES |
| Bolt Hole Diameter | 0.328 INCHES NOMINAL IN |
| Neck Height | 0.837 INCHES NOMINAL IN |
| Flange Length | 1.750 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 1.125 INCHES NOMINAL IN |
| Raised Face Diameter | 0.688 INCHES NOMINAL IN |
| Raised Face Height | 0.031 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Center to Center Distance Between Bolt Holes Along Width | 1.125 INCHES NOMINAL IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.312 INCHES NOMINAL IN |
| Flange Width | 1.750 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.312 INCHES NOMINAL IN |
| Thickness | 0.781 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 |
| Reference | Meaning |
|---|---|
| 845-4687676ASSY43 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-228-02 ASSY43 | 3/2 Design control — primary reference U.S. Government activity |
| 4687676-0043 | 5/2 Secondary reference U.S. Government activity |
| 845-4687676 | D/9 Drawing number reference only U.S. Government activity |
| 845-4687676ASSY | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4730-01-082-3442 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-084-5486, 4730-01-137-1990. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-082-3442: Socket Diameter: 0.531 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Socket Depth: 0.500 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN. 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.