The Tailpiece,union, cataloged under National Stock Number 4730-01-415-4447, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-415-4447 |
| Primary Part Number | DF330769-16-1 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Nominal Pipe Size Designation | 0.250 INCHES IN |
| End Connection Type | WELDED |
| Material | STEEL COMP 304 |
| 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 |
|---|---|
| 211002304 | Naval Sea Systems Command (USA) |
| 546-6405732 FIND 53-4 | Naval Sea Systems Command (USA) |
| 546-6405732 FIND 61-3 | Naval Sea Systems Command (USA) |
| DF330769-16-1 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 546-6405732 FIND 60-4 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 546-6405732 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF330769-16-1 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4730-01-415-4447 is a Tailpiece,union, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-415-4447 has 5 manufacturer part numbers on file: 211002304 (Naval Sea Systems Command), 546-6405732 FIND 53-4 (Naval Sea Systems Command), 546-6405732 FIND 61-3 (Naval Sea Systems Command), DF330769-16-1 (Huntington Ingalls Inc Div Newport News Shipbuilding), 546-6405732 FIND 60-4 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-415-9544, 3040-01-415-9551, 3040-01-415-9554. Verify interchangeability with system specifications before substitution.
Key specifications for DF330769-16-1: Nominal Pipe Size Designation: 0.250 INCHES IN; End Connection Type: WELDED; End Item Identification: SEAWOLF CLASS SSN; Material: STEEL COMP 304. 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.