Podavelle AN6 to 1/4" Hardline Compression Adapter — Black 2pc, 6061-T6 Aluminium

This pair of straight adapters is engineered for use where a 9/16"-18 UNF AN6 male flare needs to connect to a 1/4" (6.35mm) outside-diameter hardline. Machined from 6061-T6 billet aluminum and finished with a black anodize, each fitting includes an internal brass ferrule and a compression nut to secure aluminum, stainless steel, or copper hardline without flaring the tube end. They are commonly used in fuel, oil, transmission, and power steering plumbing when adapting factory or custom hard lines to aftermarket AN hoses.

How do these adapters attach to hardline tubing?

These are compression-style fittings: the tube slides through a ferrule and compression nut and seats into the fitting body. Tightening the nut compresses the ferrule against the tube and fitting, forming a mechanical seal without the need for flaring.

• Slide ferrule and nut onto the tube before insertion
• Fully seat the tube until it bottoms in the fitting body
• Tighten the compression nut to compress the brass ferrule and seal the joint

What materials and finishes are used and why do they matter?

The adapters are milled from 6061-T6 billet aluminum for strength and light weight, with a black anodized finish that provides corrosion resistance and a uniform aesthetic. The internal ferrule is brass, chosen for its ductility and sealing ability against common hardline metals.

• 6061-T6 aluminum body for high tensile strength and low weight
• Black anodize for surface durability and corrosion protection
• Brass ferrule for reliable compression sealing on soft and hard tubing

Which systems and tubing types are appropriate for these fittings?

Designed for fluid systems where AN hoses are used, these adapters suit fuel, oil, transmission, and power steering lines. They work with aluminum, stainless steel, and copper hardline; do not use on soft plastics or unknown alloys that might crush under compression.

• Compatible fluids: fuel, engine oil, transmission fluid, power steering fluid
• Tubing compatibility: aluminum, stainless steel, copper hardline only
• Thread: AN6 male flare (9/16-18 UNF) for standard AN hose ends

How should these fittings be installed and what precautions matter?

Installation is straightforward for experienced technicians: slide the nut and ferrule onto the clean cut tube, insert until it bottoms, and torque the nut to compress the ferrule. Because system pressure and safety are involved, professional installation is recommended and leak checking is essential after assembly.

• Use a clean, deburred 1/4" (6.35mm) OD tube end cut square
• Hand-start threads to avoid cross-threading, then torque per shop practice
• Pressure-test the assembly and inspect for leaks before regular use

Who is this for: This two-piece Podavelle adapter set is intended for mechanics, fabricators, and automotive enthusiasts who need a compact, reliable method to connect AN6 hose assemblies to 1/4" hardline tubing. It suits repair jobs, custom plumbing projects, and retrofits where retaining factory hardline while upgrading to AN hose components is desired. Professional installation is advised for pressurized systems.