The Flange,pipe, cataloged under National Stock Number 4730-01-023-7773, 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 19 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-023-7773 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 2.440 INCHES NOMINAL IN |
| Flange Diameter | 6.000 INCHES NOMINAL IN |
| Face Seating Surface Condition | GROUND |
| Nominal Pipe Size for Which Designed | 2.000 INCHES IN |
| Socket Depth | 0.690 INCHES NOMINAL IN |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) GAS MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 150.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| Neck Height | 0.300 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A181,GRADE 1 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 80204-B16.5 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 8 TABLE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 4.750 INCHES NOMINAL IN |
| Raised Face Diameter | 3.060 INCHES NOMINAL IN |
| Raised Face Height | 0.062 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.750 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 |
|---|---|
| 20-2 ASTMA-105 | C/1 Advisory reference — outside the item-of-supply concept Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy |
| B16.5 | 3/1 Design control — primary reference U.S. Government activity |
| M18180/2-06A01 | 5/9 Secondary reference U.S. Government activity |
| M18180/2-06A04 | 5/9 Secondary reference U.S. Government activity |
| B16-5-2IN-IPS150PSI-PP-FLGE | 5/9 Secondary reference U.S. Government activity |
| 20-2 | 5/1 Secondary reference Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy |
NSN 4730-01-023-7773 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-023-7773: Socket Diameter: 2.440 INCHES NOMINAL IN; Flange Diameter: 6.000 INCHES NOMINAL IN; Face Seating Surface Condition: GROUND; Nominal Pipe Size for Which Designed: 2.000 INCHES IN. 19 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.