The Nut,tube Coupling, cataloged under National Stock Number 4730-00-427-5118, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Superior Valve Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-427-5118 |
| Primary Part Number | N4-6 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Superior Valve Co |
| Status | CANCELLED |
| Thread Series | UNF |
| Length to Shoulder | 0.500 INCHES NOMINAL IN |
| Smallest Inside Diameter | 0.375 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Thread Class | 3B |
| Seat Angle | 45.00 DEGREES NOMINAL |
| Nut Style | TUBE COUPLING |
| Thread Quantity Per Inch | 18 |
| Nut Height | 1.094 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.375 INCHES IN |
| Fabrication Method | FORGED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4730-00-427-5118 is a Nut,tube Coupling, manufactured by Superior Valve Co, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-427-5118 has 3 cross-referenced part numbers: A441 (Mueller Brass Co.), N4-6-5045 (Chief of Engineers Dept of Army), N4-6 (Superior Valve Co).
There are 7 known substitutes for 4730-00-427-5118: 5310-00-011-5287, 5950-00-242-9032, 5999-00-383-2356 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for N4-6: Thread Series: UNF; Length to Shoulder: 0.500 INCHES NOMINAL IN; Smallest Inside Diameter: 0.375 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-427-5118 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.