The Nut,tube Coupling, cataloged under National Stock Number 4730-00-541-0991, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-541-0991 |
| Primary Part Number | 753231 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Fabrication Method | MACHINED |
| Nut Style | TUBE COUPLING |
| Thread Direction | RIGHT-HAND |
| Material | COPPER ALLOY 464 OVERALL |
| Nominal Thread Size | 0.562 INCHES IN |
| Smallest Inside Diameter | 0.386 INCHES NOMINAL IN |
| Length to Shoulder | 0.562 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 0.250 INCHES IN |
| Nut Height | 0.750 INCHES NOMINAL IN |
| Thread Class | 2B |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Thread Series | UNF |
| Thread Quantity Per Inch | 18 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 753231 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| BUWEPSDWG753231 PRIMARY | Naval Reserve Center (USA) |
NSN 4730-00-541-0991 is a Nut,tube Coupling, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-541-0991 has 2 cross-referenced part numbers: 753231 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), BUWEPSDWG753231 (Naval Reserve Center).
There is 1 known substitute for 4730-00-541-0991: 4820-00-726-9057. Verify interchangeability with system specifications before substitution.
Key specifications for 753231: Fabrication Method: MACHINED; Nut Style: TUBE COUPLING; Thread Direction: RIGHT-HAND; Material: COPPER ALLOY 464 OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.