The Tailpiece,union, cataloged under National Stock Number 4730-01-602-8101, 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 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-602-8101 |
| Primary Part Number | 803-7657203 ITEM 28 |
| 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 | 0.500 INCHES IN |
| End Connection Type | WELDED |
| Tubing Outside Diameter | 0.840 INCHES NOMINAL IN |
| Screw Thread Series Designator | NPS |
| Material | STEEL |
| 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 |
|---|---|
| DF314326 ITWM 28 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 803-7657203 ITEM 28 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4730-01-602-8101 is a Tailpiece,union, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-602-8101 has 2 manufacturer part numbers on file: DF314326 ITWM 28 (Huntington Ingalls Inc Div Newport News Shipbuilding), 803-7657203 ITEM 28 (Naval Sea Systems Command).
Key specifications for 803-7657203 ITEM 28: Nominal Pipe Size Designation: 0.500 INCHES IN; End Connection Type: WELDED; Tubing Outside Diameter: 0.840 INCHES NOMINAL IN; Screw Thread Series Designator: NPS. 5 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.