The Flange,pipe, cataloged under National Stock Number 4730-01-426-0353, 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 Cunico Corporation. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-426-0353 |
| Primary Part Number | 845-4456164 2 INCH SK WLD |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Cunico Corporation |
| Status | ACTIVE |
| Socket Diameter | 2.416 INCHES NOMINAL IN |
| Flange Diameter | 6.500 INCHES NOMINAL IN |
| Face Seating Surface Condition | GROUND |
| Socket Depth | 1.070 INCHES NOMINAL IN |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| Neck Height | 0.820 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 5.000 INCHES NOMINAL IN |
| Raised Face Diameter | 3.625 INCHES NOMINAL IN |
| Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Thickness | 2.070 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 |
|---|---|
| 845-4456164 2 INCH SK WLD PRIMARY | Cunico Corporation (USA) |
| 8454456164 QQ-N-281 600 PSI | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 845-4456164 RAISED FACE NICU | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 845-4456164 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| 845-4456164 2 INCH SK WLD | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-01-426-0353 is a Flange,pipe, manufactured by Cunico Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-426-0353 has 3 manufacturer part numbers on file: 845-4456164 2 INCH SK WLD (Cunico Corporation), 8454456164 QQ-N-281 600 PSI (Huntington Ingalls Inc Div Newport News Shipbuilding), 845-4456164 RAISED FACE NICU (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 845-4456164 2 INCH SK WLD: Socket Diameter: 2.416 INCHES NOMINAL IN; Flange Diameter: 6.500 INCHES NOMINAL IN; Face Seating Surface Condition: GROUND; Socket Depth: 1.070 INCHES NOMINAL IN. 15 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.