The Union,tube, cataloged under National Stock Number 4730-01-623-3204, 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 Air Cruisers Company, Llc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-623-3204 |
| Primary Part Number | 5220K73 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Air Cruisers Company, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 NUT WITH SLEEVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES ALL ENDS IN |
| Coupling Flange Shape | HEXAGON |
| Supplementary Features | EASY-ALIGN BRASS COMPRESSION TUBE FITTING |
| Nominal Overall Length | 1.36 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Operating Pressure | 1.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter | 0.375 INCHES FIRST END IN |
| Nominal Width | 0.63 INCHES SECOND END IN |
| Thread Quantity Per Inch | A0.31 FIRST END |
| Material | PLASTIC SLEEVE |
| Material | ZINC ALLOY AND COPPER ALLOY OVERALL |
| Thread Series Designator | UN SECOND END |
| Thread Series Designator | NPTF FIRST END |
| Nominal Thickness | 0.032 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-623-3204 is a Union,tube, manufactured by Air Cruisers Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-623-3204 has 2 manufacturer part numbers on file: 5220K73 (Mcmaster-Carr Supply Company), 5220K73 (Air Cruisers Company, Llc).
Key specifications for 5220K73: Furnished Items and Quantity: 1 NUT WITH SLEEVE; Nominal Pipe Size Accommodated: 0.250 INCHES ALL ENDS IN; Coupling Flange Shape: HEXAGON; Supplementary Features: EASY-ALIGN BRASS COMPRESSION TUBE FITTING. 16 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.