The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-288-9391, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-288-9391 |
| Primary Part Number | 8F8997 |
| Item Name | Inverted Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | CANCELLED |
| Tube Outside Diameter for Which Designed | 0.375 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Smallest Inside Diameter | 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Style Designator | INVERTED NUT, TUBE, DOUBLE COMPRESSION |
| Material | COPPER ALLOY |
| Thread Class | 2A A |
| Casehardening Indicator | NOT CASEHARDENED |
| Screw Thread Series Designator | UNS |
| Thread Size | 9/16-20 |
| Fabrication Method | BAR STOCK, MACHINED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 19986R1 | Navistar International Corporation Dba Navistar (USA) |
| 441392 | Imperial (USA) |
| 278953R91 | Komatsu American Intl Co (USA) |
| 278953R91 | Navistar International Corporation Dba Navistar (USA) |
| 19986R1 | Komatsu American Intl Co (USA) |
| 19986R1 | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| 67652D | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| 8F8997 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 8F8997 | Caterpillar Tractor Co Ltd (GBR) |
| 67652DX | Navistar International Corporation Dba Navistar (USA) |
| 67652DX | Komatsu American Intl Co (USA) |
| 45906 | Imperial (USA) |
| 81LB3-8 | Imperial (USA) |
| 28737 | Imperial (USA) |
| 67652DX | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| 67652D | Komatsu American Intl Co (USA) |
| 28737R | Imperial (USA) |
NSN 4730-00-288-9391 is a Inverted Nut,tube Coupling, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-288-9391 has 17 cross-referenced part numbers: 19986R1 (Navistar International Corporation Dba Navistar), 441392 (Imperial), 278953R91 (Komatsu American Intl Co), 278953R91 (Navistar International Corporation Dba Navistar), 19986R1 (Komatsu American Intl Co) and 12 more.
There are 8 known substitutes for 4730-00-288-9391: 5330-00-268-3448, 5950-00-345-7474, 2530-00-737-7749 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 8F8997: Tube Outside Diameter for Which Designed: 0.375 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Smallest Inside Diameter: 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN; Width Across Flats: 0.625 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-288-9391 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.