The Nut,tube Coupling, cataloged under National Stock Number 4730-01-105-3911, 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 Sae International Dba Sae International. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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 | 4730-01-105-3911 |
| Primary Part Number | SAE-AS4841 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Smallest Inside Diameter | 1.347 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN |
| Length to Shoulder | 1.017 INCHES NOMINAL IN |
| Nominal Tube Outside Diameter | 1.250 INCHES IN |
| Thread Quantity Per Inch | 12 |
| Surface Treatment | CADMIUM OVERALL |
| Nut Height | 1.214 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Nominal Thread Size | 1.625 INCHES IN |
| Nut Style | TUBE COUPLING |
| Width Across Flats | 1.984 INCHES MINIMUM AND 2.016 INCHES MAXIMUM IN |
| Thread Class | 3B |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SAE-AS4841 | Sae International Dba Sae International (USA) |
| A818-20 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| AN818-20 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| AS4841 | Sae International Dba Sae International (USA) |
NSN 4730-01-105-3911 is a Nut,tube Coupling, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-105-3911 has 4 cross-referenced part numbers: SAE-AS4841 (Sae International Dba Sae International), A818-20 (Aeronautical Standards Group Dept of Navy and Air Force), AN818-20 (Aeronautical Standards Group Dept of Navy and Air Force), AS4841 (Sae International Dba Sae International).
There is 1 known substitute for 4730-01-105-3911: 4730-00-287-0268. Verify interchangeability with system specifications before substitution.
Key specifications for SAE-AS4841: Thread Direction: RIGHT-HAND; Smallest Inside Diameter: 1.347 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN; Length to Shoulder: 1.017 INCHES NOMINAL IN; Nominal Tube Outside Diameter: 1.250 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.