The Thread Piece,union, cataloged under National Stock Number 4730-01-512-9084, 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 Hydrasearch Company, Llc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-512-9084 |
| Primary Part Number | 2T73-3,CF |
| Item Name | Thread Piece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Union End Thread Direction | RIGHT-HAND |
| Nominal Pipe Size Designation | 0.500 INCHES IN |
| End Connection Type | THREADED |
| Union End Thread Size | 1-5/8-16 |
| Seat Type | RECESSED FACE |
| Thread Direction | RIGHT-HAND |
| Tubing Outside Diameter | 0.500 INCHES NOMINAL IN |
| Thread Size | 1/2-14 |
| Screw Thread Series Designator | NPT |
| Union End Screw Thread Series Designator | UN |
| Screw Thread Location | INTERNAL |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 2T73-3,CF PRIMARY | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 73T-3-SS | 5/2 Secondary reference U.S. Government activity |
| B2557 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-512-9084 is a Thread Piece,union, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-512-9084 has 1 manufacturer part number on file: 2T73-3,CF (Hydrasearch Company, Llc).
Key specifications for 2T73-3,CF: Union End Thread Direction: RIGHT-HAND; Nominal Pipe Size Designation: 0.500 INCHES IN; End Connection Type: THREADED; Union End Thread Size: 1-5/8-16. 12 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.