The Flange,pipe, cataloged under National Stock Number 4730-01-239-3689, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-239-3689 |
| Primary Part Number | 2403211 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Flange Diameter | 5.000 INCHES NOMINAL IN |
| Nominal Pipe Size for Which Designed | 4.000 INCHES IN |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 2403211 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 508-5590030 ITEM FL-4 | Disposable Waste Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 2285-1115 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| 508-5990030 ITEM FL-4 | 5/9 Secondary reference Nucraloy Corp |
| 508-5590030 ITEM FL-4 | 5/9 Secondary reference Nipak Inc |
| 508-5590030 | D/9 Drawing number reference only Nipak Inc |
| 508-5590030 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4730-01-239-3689 is a Flange,pipe, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-239-3689 has 2 manufacturer part numbers on file: 2403211 (Huntington Ingalls Inc Div Newport News Shipbuilding), 508-5590030 ITEM FL-4 (Disposable Waste Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-239-8944, 4730-01-246-2878. Verify interchangeability with system specifications before substitution.
Key specifications for 2403211: Flange Diameter: 5.000 INCHES NOMINAL IN; Nominal Pipe Size for Which Designed: 4.000 INCHES IN; Style Designator: ROUND, ONE BOLT HOLE CIRCLE; Material: COPPER ALLOY. 4 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.