The Tailpiece,union, cataloged under National Stock Number 4730-01-307-8925, 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 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-307-8925 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| End Connection Type | WELDED |
| Seat Type | STRAIGHT FACE |
| Material | COPPER ALLOY 706 |
| 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 |
|---|---|
| 2621-791-05 | D/9 Drawing number reference only U.S. Government activity |
| 845-4775990 PIECE 71 | 5/2 Secondary reference U.S. Government activity |
| 845-4775990 | D/9 Drawing number reference only U.S. Government activity |
| 2621-791-05 PIECE 71 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-307-8925 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-309-5119. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-307-8925: End Connection Type: WELDED; Overall Length: 5.250 INCHES NOMINAL IN; Seat Type: STRAIGHT FACE; Material: COPPER ALLOY 706. 3 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.