The Flange,pipe, cataloged under National Stock Number 4730-01-123-6902, 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 Naval Sea Systems Command. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-123-6902 |
| Primary Part Number | 803-5001003-A75X-121 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Socket Diameter | 1.900 INCHES MINIMUM AND 1.905 INCHES MAXIMUM IN |
| Face Seating Surface Condition | GROUND |
| Nominal Pipe Size for Which Designed | 1.500 INCHES IN |
| Flange Section Style | PLAIN FACE, SOCKET BRAZING NECK W/O BRAZING RING |
| Style Designator | SQUARE, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.453 INCHES NOMINAL IN |
| Neck Height | 1.093 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-390,ALLOY 922 FED SPEC SINGLE MATERIAL RESPONSE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 3.560 INCHES NOMINAL IN |
| Flange Width | 3.750 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN |
| Bore Diameter | 1.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Thickness | 0.844 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 |
|---|---|
| 803-5001003-A75X-121 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5001003-A75X-02 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 803-5001003-A75X-02 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 4730-01-123-6902 is a Flange,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-123-6902 has 1 manufacturer part number on file: 803-5001003-A75X-121 (Naval Sea Systems Command).
Key specifications for 803-5001003-A75X-121: Socket Diameter: 1.900 INCHES MINIMUM AND 1.905 INCHES MAXIMUM IN; Face Seating Surface Condition: GROUND; Nominal Pipe Size for Which Designed: 1.500 INCHES IN; Flange Section Style: PLAIN FACE, SOCKET BRAZING NECK W/O BRAZING RING. 14 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.