The Tailpiece,union, cataloged under National Stock Number 4730-01-171-5202, 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 7 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-171-5202 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 0.250 INCHES IN |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| End Connection Type | WELDED |
| Seat Type | GASKET |
| Material | COPPER ALLOY 706 |
| Flange Outside Diameter | 1.062 INCHES NOMINAL IN |
| Working Pressure and Service Type | 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OXYGEN AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL LBS |
| 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 |
|---|---|
| 810-1385884 PC8 | 3/1 Design control — primary reference U.S. Government activity |
| 810-1385884 PC6 | 3/1 Design control — primary reference U.S. Government activity |
| 516-4682243F10 | D/9 Drawing number reference only U.S. Government activity |
| 810-1385884PIEC | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 810-1385884 PC9 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-01-171-5202 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-290-1041, 4730-01-290-1042, 4730-01-290-1043. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-171-5202: Nominal Pipe Size Designation: 0.250 INCHES IN; Flange Thickness: 0.250 INCHES NOMINAL IN; End Connection Type: WELDED; Overall Length: 0.872 INCHES MINIMUM AND 1.078 INCHES MAXIMUM 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.