The Tailpiece,union, cataloged under National Stock Number 4730-01-379-4971, 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 Hydrasearch Company, Llc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-379-4971 |
| Primary Part Number | 943P3-3 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Union Outside Diameter | 1.625 INCHES NOMINAL IN |
| Nominal Pipe Size Designation | 0.500 INCHES IN |
| End Connection Type | BRAZED |
| Seat Type | GASKET |
| Material | COPPER ALLOY |
| Working Pressure and Service Type | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL AIR LBS |
| 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 |
|---|---|
| 943P3-3 PRIMARY | Hydrasearch Company, Llc (USA) |
| 943P3-3 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| 6243065 | 7/1 Vendor item drawing reference Naval Sea Systems Command |
| 943P3-3 | 5/2 Secondary reference U.S. Government activity |
| 803-1385943 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-379-4971 is a Tailpiece,union, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-379-4971 has 2 manufacturer part numbers on file: 943P3-3 (Hydrasearch Company, Llc), 943P3-3 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
Key specifications for 943P3-3: Union Outside Diameter: 1.625 INCHES NOMINAL IN; Nominal Pipe Size Designation: 0.500 INCHES IN; End Connection Type: BRAZED; Overall Length: 1.125 INCHES NOMINAL IN. 6 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.