The Tailpiece,union, cataloged under National Stock Number 4730-01-262-4973, 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 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-262-4973 |
| 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 |
| Specification/standard Data | 81349-MIL-T-16420 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 700 CLASS |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MIL-T-16420 |
| 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 |
|---|---|
| 803-4384536-8XXX-24MOD | 3/1 Design control — primary reference U.S. Government activity |
| 1600-005 | D/9 Drawing number reference only Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| MIL-T-16420 CLASS700 | 4/1 Identification reference U.S. Government activity |
| 803-4384536 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-262-4973 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-262-5308, 4730-01-419-8916, 5826-01-473-1867. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-262-4973: End Connection Type: WELDED; Seat Type: STRAIGHT FACE; Specification/standard Data: 81349-MIL-T-16420 GOVERNMENT SPECIFICATION; Nondefinitive Spec/std Data: 700 CLASS. 6 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.