The Flange,pipe, cataloged under National Stock Number 4730-00-277-3399, 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 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-277-3399 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 11.000 INCHES NOMINAL IN |
| Face Seating Surface Condition | SERRATED |
| Maximum Operating Temp and Media for Which Designed | 500.0 FAHRENHEIT STEAM DEGF |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | RAISED FACE, RAISED NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.875 INCHES NOMINAL IN |
| Neck Height | 0.500 INCHES NOMINAL IN |
| Nominal Thread Size | 4.000 INCHES IN |
| Reducer Flange Hole Type | CONCENTRIC |
| Nondefinitive Spec/std Data | E STYLE AND 1 TYPE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 9.500 INCHES NOMINAL IN |
| Raised Face Diameter | 7.562 INCHES NOMINAL IN |
| Raised Face Height | 0.062 INCHES NOMINAL IN |
| Screw Thread Series Designator | NPT |
| Material | STEEL |
| Thickness | 0.938 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 |
|---|---|
| B16.5 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| M18180/5-012A01K | 5/9 Secondary reference U.S. Government activity |
| MILF18180 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-277-3399 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-277-3399: Flange Diameter: 11.000 INCHES NOMINAL IN; Face Seating Surface Condition: SERRATED; Maximum Operating Temp and Media for Which Designed: 500.0 FAHRENHEIT STEAM DEGF; Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS. 18 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.