The Nut,tube Coupling, cataloged under National Stock Number 4730-01-290-4913, 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 Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 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 | 4730-01-290-4913 |
| Primary Part Number | AN818 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Aeronautical Standards Group Dept of Navy and Air Force |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nominal Tube Outside Diameter | 0.250 INCHES IN |
| Length to Shoulder | 0.532 INCHES NOMINAL IN |
| Nominal Thread Size | 0.437 INCHES IN |
| Smallest Inside Diameter | 0.305 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 20 |
| Width Across Flats | 0.563 INCHES NOMINAL IN |
| Specification/standard Data | 88044-AN818-4W GOVERNMENT STANDARD W |
| Thread Direction | RIGHT-HAND |
| Fabrication Method | MACHINED |
| Nut Height | 0.620 INCHES NOMINAL IN |
| Thread Class | 3B |
| Nut Style | TUBE COUPLING |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AN818 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| AS4841 | Sae International Dba Sae International (USA) |
| AN818-4W | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| 4730PL1460054 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MILF5509A | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| AS4841 | Society of Automotive Engineers Inc (USA) |
| SAE-AS4841 | Sae International Dba Sae International (USA) |
| AN818-4D | Airforce-Navy Aeronautical Design Standard |
NSN 4730-01-290-4913 is a Nut,tube Coupling, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-290-4913 has 8 cross-referenced part numbers: AN818 (Aeronautical Standards Group Dept of Navy and Air Force), AS4841 (Sae International Dba Sae International), AN818-4W (Aeronautical Standards Group Dept of Navy and Air Force), 4730PL1460054 (Jednolity Indeks Materialowy - Uniform Material Index), MILF5509A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.
There is 1 known substitute for 4730-01-290-4913: 4730-00-287-0289. Verify interchangeability with system specifications before substitution.
Key specifications for AN818: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nominal Tube Outside Diameter: 0.250 INCHES IN; Length to Shoulder: 0.532 INCHES NOMINAL IN; Nominal Thread Size: 0.437 INCHES IN. 15 total characteristics are documented in the Federal Logistics Information System.