The Tailpiece,union, cataloged under National Stock Number 4730-01-522-2201, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-522-2201 |
| Primary Part Number | 6392302-01 FIND 007 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 0.750 INCHES IN |
| Flange Thickness | 0.120 INCHES NOMINAL IN |
| End Connection Type | WELDED |
| Seat Type | RECESSED FACE |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Flange Outside Diameter | 1.875 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 |
|---|---|
| 6392302-01 FIND 007 | Naval Sea Systems Command (USA) |
| 6392303 FIND 007 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 104R-4-SS | 3/2 Design control — primary reference U.S. Government activity |
| 6392302 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-522-2201 is a Tailpiece,union, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-522-2201 has 2 manufacturer part numbers on file: 6392302-01 FIND 007 (Naval Sea Systems Command), 6392303 FIND 007 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-522-2206. Verify interchangeability with system specifications before substitution.
Key specifications for 6392302-01 FIND 007: Nominal Pipe Size Designation: 0.750 INCHES IN; Flange Thickness: 0.120 INCHES NOMINAL IN; End Connection Type: WELDED; Overall Length: 1.125 INCHES NOMINAL IN. 7 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.