10AN 5/8” Sleeve Fitting and Female Hardline Tube Nut for OD Aluminum Tubing (2 Pcs)

Description

Product Overview

The 10AN 5/8 sleeve fitting and hardline tube nut is engineered to deliver a secure, leak‑free connection for 5/8″ outer‑diameter stainless steel tubing commonly used in high‑performance automotive and industrial applications. Crafted from aerospace‑grade 6061‑T6 aluminum, the component combines lightweight strength with exceptional resistance to corrosion, abrasion, and thermal cycling. Its design incorporates a precision‑machined internal thread that matches the 7/8‑14 UNF thread size of the 10AN series, ensuring a tight fit that maintains structural integrity even under extreme pressure differentials.

With a working temperature range spanning from -65°F to 252°F, this tube nut can reliably operate in both sub‑zero environments and high‑heat scenarios such as engine bays, fuel delivery systems, and cooling circuits. The material selection also provides excellent fatigue resistance, allowing the fitting to endure repeated installation and removal cycles without compromising performance. Each package includes two identical units, giving technicians the flexibility to service multiple connection points or keep a spare on hand for future maintenance.

Beyond its mechanical attributes, the fitting features a smooth exterior finish that minimizes drag and reduces the likelihood of snagging on adjacent components during assembly. The hardline designation indicates that the nut is intended for use with rigid tubing, delivering a firm, non‑flexible joint that is essential for maintaining precise flow characteristics in fuel and brake lines. This product meets rigorous industry standards for safety and reliability, making it a trusted choice for professional mechanics, performance tuners, and DIY enthusiasts alike.

Usage

In automotive engine modification projects, the 10AN sleeve fitting serves as a critical interface between aftermarket fuel injectors and the existing fuel rail, allowing for seamless integration of high‑flow components while preserving the integrity of the fuel system. Its robust construction ensures that the connection can withstand the pulsating pressures generated by high‑performance engines, reducing the risk of leaks that could lead to fuel loss or fire hazards.

For brake system upgrades, the tube nut provides a dependable link between stainless steel brake lines and hardline adapters, facilitating the installation of larger‑diameter hoses that improve fluid flow and braking response. The precise thread engagement prevents loosening under the high‑temperature conditions typical of brake caliper operation, thereby enhancing overall safety.

Cooling system applications benefit from the fitting’s ability to handle both coolant and oil flows without degradation. Whether used to connect a custom radiator loop or to replace a corroded section of a water pump circuit, the fitting’s temperature tolerance and corrosion resistance ensure long‑term reliability. Additionally, the component is suitable for use in fuel delivery systems for marine, aviation, and off‑road equipment where exposure to harsh environments is common.

Why Choose Us

Choosing Zreneyfex means selecting a brand that prioritizes engineering excellence and material quality. Our 10AN sleeve fitting undergoes a multi‑stage manufacturing process that includes CNC machining, heat treatment, and surface finishing to guarantee dimensional accuracy and consistent performance across every batch. This rigorous quality control protocol minimizes variability, ensuring that each nut meets the exact specifications required for critical applications.

We stand behind our products with a comprehensive warranty that covers material defects and workmanship errors, providing customers with confidence and peace of mind. Our dedicated technical support team is available to assist with installation guidance, compatibility questions, and troubleshooting, ensuring that you receive the assistance you need throughout the product lifecycle.

Environmental responsibility is also a core value for Zreneyfex. The 6061‑T6 aluminum used in this fitting is fully recyclable, and our manufacturing facilities adhere to strict waste‑reduction standards. By selecting our product, you contribute to a more sustainable supply chain without compromising on performance.

Key Features

• Precision‑machined 7/8‑14 UNF thread ensures a tight, leak‑free seal for 5/8″ OD tubing.
• Made from 6061‑T6 aluminum, offering high strength, corrosion resistance, and a wide temperature range.
• Designed for hardline applications, providing a rigid, non‑flexible joint that maintains flow consistency.
• Includes two nuts per package, allowing for dual‑point installations or spare parts inventory.
• Backed by Zreneyfex technical support and warranty for reliable after‑sales service.

FAQ

What tubing size does this fitting accept?

The fitting is sized for 5/8″ outer‑diameter stainless steel tubing, which is the standard size for many fuel, brake, and cooling line applications.

Can this nut be used with flexible hoses?

While the nut is optimized for hardline (rigid) tubing to provide a firm connection, it can be paired with compatible flexible hose adapters if a flexible section is required in the system.

Is the 6061‑T6 aluminum suitable for high‑pressure fuel systems?

Yes, 6061‑T6 aluminum offers excellent tensile strength and fatigue resistance, making it well‑suited for high‑pressure environments such as fuel injection and fuel pump circuits.

What is the recommended torque setting for installation?

We recommend tightening the nut to a torque of 8‑10 ft‑lb (10.8‑13.6 Nm) using a calibrated torque wrench to achieve optimal sealing without over‑compressing the tubing.

Do you provide any documentation or certifications?

All Zreneyfex products, including this tube nut, come with a detailed data sheet that outlines material specifications, dimensional tolerances, and compliance with relevant industry standards.