The Nut,tube Coupling, cataloged under National Stock Number 4730-00-193-8117, 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 Collins Engineering Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 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 | 4730-00-193-8117 |
| Primary Part Number | AN818-40 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Collins Engineering Corp |
| Status | ACTIVE |
| Nominal Tube Outside Diameter | 2.500 INCHES IN |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Nominal Thread Size | 3.000 INCHES IN |
| Smallest Inside Diameter | 2.667 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 1137 OR STEEL COMP 1141 OVERALL |
| Length to Shoulder | 1.328 INCHES NOMINAL IN |
| Nut Height | 1.625 INCHES NOMINAL IN |
| Width Across Flats | 3.375 INCHES NOMINAL IN |
| Nut Style | TUBE COUPLING |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3B |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Specification/standard Data | 88044-AN818 GOVERNMENT STANDARD |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AN818-40 | Collins Engineering Corp (USA) |
| AN818-40 | Crown Fitting Co Inc (USA) |
| AN818-40 | Aeronautical Standards Group Dept of Navy and Air Force (USA) |
| AS4841 | Sae International Dba Sae International (USA) |
| AN818-40 | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| AN818-40 | Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA) |
| AN818-40 | Faber Enterprises, Inc. Div Faber Enterprise Inc (USA) |
| AN818-40 | Hydrasearch Company, Llc (USA) |
| SAE-AS4841 | Sae International Dba Sae International (USA) |
| AN818-40 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| AN818-40 | Aerofit, Llc (USA) |
| AN818-40 | Hydro-Fitting Manufacturing Corporation (USA) |
NSN 4730-00-193-8117 is a Nut,tube Coupling, manufactured by Collins Engineering Corp, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-193-8117 has 12 cross-referenced part numbers: AN818-40 (Collins Engineering Corp), AN818-40 (Crown Fitting Co Inc), AN818-40 (Aeronautical Standards Group Dept of Navy and Air Force), AS4841 (Sae International Dba Sae International), AN818-40 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply) and 7 more.
There is 1 known substitute for 4730-00-193-8117: 4730-00-287-0289. Verify interchangeability with system specifications before substitution.
Key specifications for AN818-40: Nominal Tube Outside Diameter: 2.500 INCHES IN; Thread Series: UNIFIED NATIONAL JOINT (UNJ); Nominal Thread Size: 3.000 INCHES IN; Smallest Inside Diameter: 2.667 INCHES NOMINAL IN. 15 total characteristics are documented in the Federal Logistics Information System.