Eaton 1290-16S Steel Flared Tube Nut 1 in Od 37 Degree

Product Description

The EATON 1290-16S is a 3-piece steel flared tube nut designed for use in hydraulic and fluid-transfer line assemblies requiring a secure, leak-resistant flare connection. It features a 37-degree flare angle conforming to SAE standards, a 1-5/16-12 thread size, and accommodates a 1-inch tube outside diameter. Rated to a maximum working pressure of 2500 psi, this fitting is built for demanding industrial and fluid-power applications. The steel construction provides durability under pressure cycling and vibration. It is sold as a single unit and is suited for installation by hydraulic system technicians, millwrights, and fluid-power mechanics.

This tube nut is used in hydraulic line assemblies, fluid-power circuits, and high-pressure tubing systems where SAE 37-degree flare connections are specified. Typical install scenarios include machine hydraulic systems, mobile equipment fluid lines, and industrial plumbing runs using hard tubing. The SAE 37-degree flare end connection is a common standard across a wide range of hydraulic and pneumatic tube fittings in both mobile and stationary equipment.

Key Features

• 37-degree SAE flare angle for leak-resistant tube connections
• 1-inch tube outside diameter compatibility
• 1-5/16-12 thread size conforming to SAE thread standards
• 2500 psi maximum working pressure rating
• Steel construction for strength under pressure and vibration
• 3-piece design for assembly onto hard tubing before flaring

Compatibility

Designed as an OEM-style replacement or service fitting for hydraulic and fluid-power tube assemblies using SAE 37-degree flare end connections with a 1-inch tube outside diameter and 1-5/16-12 thread.

Installation Notes

Installation is typically performed by hydraulic technicians or fluid-power mechanics. Depressurize and lock out the hydraulic system fully before removing or installing any tube fittings. Use proper SAE-rated flaring tools to prepare the tube end before assembling the nut. Inspect the flare seat and mating fitting for damage or debris before torquing to the system specification.