The Elbow,pipe, cataloged under National Stock Number 4730-01-239-3643, 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 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-239-3643 |
| Primary Part Number | 2403451 |
| Item Name | Elbow,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 3.000 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Leg Length | 9.625 INCHES NOMINAL ALL ENDS IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 2285-1115 ITEM F-26 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 2403451 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 508-5590030 ITEM F-26 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 508-5590030 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2285-1115 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-01-239-3643 is a Elbow,pipe, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-239-3643 has 3 manufacturer part numbers on file: 2285-1115 ITEM F-26 (Huntington Ingalls Inc Div Newport News Shipbuilding), 2403451 (Huntington Ingalls Inc Div Newport News Shipbuilding), 508-5590030 ITEM F-26 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-239-3647, 4730-01-239-3689. Verify interchangeability with system specifications before substitution.
Key specifications for 2403451: Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 3.000 INCHES ALL ENDS IN; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: BUTT WELD PIPE ALL ENDS. 6 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.