Ailbiuko 100Pcs 3/16" Brake Line Fittings Kit,Nut and Union

The Ailbiuko 100-piece 3/16" brake line fittings kit supplies assorted inverted-flare nuts and unions so you can reliably join or repair 3/16" brake, fuel, or hydraulic tubing.

Keep a full set of common inverted-flare fittings on hand: this kit combines multiple thread sizes in one organized box to match factory 3/16" brake lines. The plated fittings resist corrosion, maintain ductility under heat, and are sized to fit standard 3/16" (regular) tubing used in many cars, trucks, and SUVs. Whether you’re replacing a damaged nut or building a custom line, the collection reduces trips to the parts store and speeds up repairs.

What sizes and quantities are included in this fittings set?

The kit contains 100 total pieces arranged by thread type to cover the most common inverted-flare connections for 3/16" tubing. That variety helps you match factory fittings or swap sizes during a retrofit.

• 60 x 3/16" (3/8-24) inverted tube nuts
• 16 x 3/16" (7/16-24) inverted tube nuts
• 8 x 3/16" (1/2-20) inverted tube nuts
• 8 x 3/16" (9/16-18) inverted tube nuts
• 8 x 3/16" (3/8-24) inverted tube unions

How durable and corrosion-resistant are these fittings?

Ailbiuko manufactures these nuts and unions from plated metal engineered to withstand typical automotive conditions. The plating improves resistance to surface rust and helps the fittings retain strength at elevated temperatures encountered near brakes and engines.

• Corrosion-resistant plating for longer service life
• Good ductility to resist cracking during tightening
• Suitable for brake and fuel system environments

How do I install these inverted-flare nuts and unions?

Installation is straightforward for anyone familiar with brake-line work: prepare the tubing, slip the nuts on, align the inverted flare, then join with the union and tighten to a proper wrench torque. Always clean tubing, inspect flares, and follow torque or safety specs for your vehicle.

• Clean tube ends and inspect flares before assembly
• Slide nut onto each tube end, align inverted flares
• Secure union and tighten with the correct-size wrench
• Bleed system and check for leaks after installation

Which applications and vehicles will these fittings work with?

These fittings cover standard inverted-flare connections for regular 3/16" brake tubing and are commonly compatible with many passenger cars, light trucks, and SUVs. They’re also useful for fuel lines and other low-pressure hydraulic lines that use 3/16" inverted-flare fittings.

• Rear and front brake hard-lines using 3/16" tubing
• Fuel system lines with inverted-flare fittings
• Hydraulic tubing in light-duty vehicle systems
• Useful for maintenance kits, spares, and emergency repairs

Who is this for? The Ailbiuko 100-piece 3/16" brake line fittings kit is aimed at DIY mechanics, home-garage restorers, mobile technicians, and fleet maintenance teams who need a comprehensive selection of inverted-flare nuts and unions without buying individual parts. If you work on classic brake lines, perform on-the-road repairs, or build custom tubing runs, this kit reduces downtime and gives you the thread options required to match most 3/16" systems. For safety-critical brake or fuel work, pair installation with proper torque specifications, leak testing, and professional guidance when needed.