The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-278-5549, 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 Cummins Inc.. Government technical data includes 12 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-278-5549 |
| Primary Part Number | S1037 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Cummins Inc. |
| Status | CANCELLED |
| Thread Class | 2A A |
| Thread Size | 7/8-18 |
| Smallest Inside Diameter | 0.632 INCHES NOMINAL IN |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Style Designator | INVERTED NUT, TUBE, FLARE |
| Material | STEEL |
| Seat Angle in Deg | 45.000 |
| Fabrication Method | BAR STOCK, MACHINED |
| Screw Thread Series Designator | UNS |
| Tube Outside Diameter for Which Designed | 0.625 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4730-00-278-5549 is a Inverted Nut,tube Coupling, manufactured by Cummins Inc., classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-278-5549 has 3 cross-referenced part numbers: 41W5-8 (Imperial), 41IF-10 (Parker-Hannifin Corp Div Fluid System Connector Division), S1037 (Cummins Inc.).
There is 1 known substitute for 4730-00-278-5549: 2805-00-447-1470. Verify interchangeability with system specifications before substitution.
Key specifications for S1037: Thread Class: 2A A; Thread Size: 7/8-18; Smallest Inside Diameter: 0.632 INCHES NOMINAL IN; Width Across Flats: 0.875 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-278-5549 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.