The Union,pipe, cataloged under National Stock Number 4730-01-389-9644, 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 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-389-9644 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | NICKEL ALLOY AND ALUMINUM ALLOY AND COPPER ALLOY OVERALL |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY ULTRASONIC TESTING |
| 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 |
|---|---|
| 810-1385943ASSYK-3/4 IN | 5/1 Secondary reference Naval Sea Systems Command |
| 1385943ASSYK-3/4 IN | 5/1 Secondary reference Naval Sea Systems Command |
| 1385943 | D/9 Drawing number reference only Rotron Incorporated |
| 1213-2-51 | 3/1 Design control — primary reference Rotron Incorporated |
NSN 4730-01-389-9644 is a Union,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-389-9644: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: 3/4 IN PIPE-NPS FOR UT INSP; ASSY K, IS ANY ASSY THAT CONTAINS PC 10, 11, OR 12; SEE NOTE 2.14 I.E. THESE PCS ARE RESTRICTED TO AIR AND HYDRAULIC SYSTEMS NOT EXPOSED TO SEA WATER; SHALL NOT BE USED IN AREAS WETTED BY SEA WATER; P/N BREAKDOWN PC10, THRD PC FEMALE, PC11, TAIL PC FEMALE, PC12 UNION NUT IN; Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE; End Item Identification: SUBMARINE; SEAWOLF/HEAT EXCHANGE. 4 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.