The Union,pipe to Tube, cataloged under National Stock Number 4730-00-468-0069, 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 23 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-468-0069 |
| Primary Part Number | 389988PC365 |
| Item Name | Union,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END0.500 INCHES SECOND END IN |
| Connection Style | SOCKET (TUBE) FIRST ENDSOCKET (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END |
| Coupling Flange Shape | HEXAGONHEXAGON |
| Tubing Wall Nominal Thickness for Which Designed | 0.110 INCHES FIRST END IN |
| Nominal Overall Length | 2.250 INCHES IN |
| Connection Type | THREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END |
| Style Designator | SCREWED |
| Nominal Outside Diameter Tube Accommodated | 0.675 INCHES FIRST END IN |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Type | GROUND-JOINTGROUND-JOINT |
| Nominal Thread Size | 0.500 INCHES SECOND END0.500 INCHES SECOND END IN |
| Maximum Operating Temp | 218.3 CELSIUS FIRST RESPONSE218.3 CELSIUS FIRST RESPONSE DEGC |
| Maximum Operating Temp | 65.6 CELSIUS SECOND RESPONSE65.6 CELSIUS SECOND RESPONSE DEGC |
| Departure From Cited Document | AS MODIFIED BY PRESSURE AND TEMPERATURE RATINGS |
| Nondefinitive Spec/std Data | B TYPE |
| Media for Which Designed | STEAM SECOND RESPONSE |
| Media for Which Designed | STEAM SECOND RESPONSEWATER-OIL-GAS FIRST RESPONSE |
| Material | COPPER ALLOY SEAT |
| Material | COPPER ALLOY SEATCOPPER ALLOY OVERALL |
| Thread Series Designator | NPT SECOND END |
| Reducer Type | CONCENTRICCONCENTRIC |
| 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 |
|---|---|
| 389988PC365 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MILF1183 | 4/1 Identification reference U.S. Government activity |
| 389988PC365 | 5/9 Secondary reference U.S. Government activity |
| 150-428GPC365 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
| 20-365 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
NSN 4730-00-468-0069 is a Union,pipe to Tube, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-468-0069 has 1 manufacturer part number on file: 389988PC365 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-132-8760, 3120-01-416-7320. Verify interchangeability with system specifications before substitution.
Key specifications for 389988PC365: Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END0.500 INCHES SECOND END IN; Connection Style: SOCKET (TUBE) FIRST ENDSOCKET (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END; Coupling Flange Shape: HEXAGONHEXAGON. 23 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.