The Flange,pipe, cataloged under National Stock Number 4730-01-149-9075, 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 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-149-9075 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 2.560 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.750 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 325.0 FAHRENHEIT ANY ACCEPTABLE DEGF |
| Flange Section Style | PLAIN FACE, SOCKET BRAZING NECK W/O BRAZING RING |
| Criticality Code Justification | ZZZY |
| Style Designator | SQUARE, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.328 INCHES NOMINAL IN |
| Neck Height | 0.834 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-390,ALLOY 922 FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | COUNTERBORED BOLT HOLES |
| Bolt Hole Quantity | 4 |
| Flange Width | 2.875 INCHES MINIMUM AND 2.937 INCHES MAXIMUM IN |
| Bore Diameter | 0.843 INCHES MINIMUM AND 0.893 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL FOR LEVEL 1 |
| Thickness | 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| 5001003-A431-02L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 5001003-A431-02 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4730-01-149-9075 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-149-9075: Socket Diameter: 2.560 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.750 INCHES IN; Maximum Operating Temp and Media for Which Designed: 325.0 FAHRENHEIT ANY ACCEPTABLE DEGF. 17 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.