The Tailpiece,union, cataloged under National Stock Number 4730-01-290-9307, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-290-9307 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| 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 |
|---|---|
| MR51-2-AO | 5/9 Secondary reference Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| 1038-060-G6 | 5/9 Secondary reference Nucraloy Corp |
| 51R2 | 5/9 Secondary reference U.S. Government activity |
| MR51-2-AO | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| 51R-2-CU/NI | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-290-9307 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): 4730-01-640-6736. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-290-9307: Special Features: END ITEM APPLICATION SLIDING PADEYE RECEIVING UNIT; MATERIAL: COPPER NICKEL ALLOY 70/30.. 0 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.