What are metric flare nut wrenches used for?

Metric flare nut wrenches, also known as line wrenches, are specifically designed for loosening and tightening fittings on hydraulic lines, brake lines, fuel lines, and other tubing systems. Their unique design, with a box-end opening that grips multiple sides of the nut, helps prevent rounding and damage to the fitting, which is common with open-end wrenches.

What sizes are typically included in a metric flare nut wrench set?

Metric flare nut wrench sets typically include a range of common sizes to accommodate various applications. You'll often find sets containing sizes from 8mm to 19mm, covering the most frequently encountered fittings in automotive, industrial, and plumbing systems. Some sets may include larger or smaller sizes depending on the intended use.

Which brands of metric flare nut wrench sets does ToolSource carry?

ToolSource offers a wide selection of metric flare nut wrench sets from leading brands in the industry. You can find sets from GearWrench, SK Hand Tool, Stanley Proto Industrial Tools, Genius Tools, KD Tools, VIM Tools, Astro Pneumatic, and Armstrong, among others. With 36 different metric flare nut wrench sets available, you're sure to find the right set for your needs.

What should I look for when choosing a metric flare nut wrench set?

When selecting a metric flare nut wrench set, consider the quality of the steel used, the precision of the wrench openings, and the overall durability of the set. Look for sets made from high-quality alloy steel for strength and longevity. Also, consider the number of wrenches included and whether the sizes meet your specific application requirements.

Are there different types of metric flare nut wrench sets available?

Yes, metric flare nut wrench sets are available in different configurations. You can find standard sets with a fixed head, as well as sets with ratcheting mechanisms for faster and easier use in tight spaces. Some sets also feature angled heads for improved access to hard-to-reach fittings.

How do I properly use a metric flare nut wrench to avoid damaging fittings?

To avoid damaging fittings, ensure the wrench is fully seated on the flare nut before applying force. Apply steady, even pressure and avoid jerking or excessive force. If the fitting is particularly stubborn, consider using a penetrating oil to help loosen it before attempting to turn it with the wrench.

What is the advantage of using a flare nut wrench over a regular open-end wrench?

Flare nut wrenches provide a more secure grip on fittings compared to open-end wrenches. The enclosed design of the flare nut wrench distributes force over more of the nut's surface, reducing the risk of rounding or damaging the fitting, especially when dealing with corroded or tightly fastened connections.

Are metric flare nut wrenches only for automotive applications?

While metric flare nut wrenches are commonly used in automotive repair for brake lines and fuel lines, their applications extend beyond the automotive industry. They are also valuable tools for working on hydraulic systems, refrigeration lines, and other tubing systems in industrial, plumbing, and HVAC settings.

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6 Pc Metric Flare Nut Wrench - Genius Tools

Name: 6 Pc Metric Flare Nut Wrench
Brand: Genius Tools
SKU: 130943
Price: 73.29 USD
Availability: InStock

Part #: FN-006M

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The Genius Tools FN-006M 6-piece metric flare nut wrench set is engineered for professional technicians and mechanics requiring reliable tools for critical fastening applications. Designed specifically for soft fittings and line nuts, these wrenches provide increased contact area, reducing the risk of rounding fasteners often found on brake lines, fuel lines, and hydraulic systems. This set offers a comprehensive range of common metric sizes to handle a variety of automotive and industrial tasks.

Key Features

Professional-Grade Construction: Manufactured from durable Chrome Vanadium Steel for strength and longevity under demanding workshop conditions.
Enhanced Grip Design: Features a specialized head design that surrounds more of the fastener, minimizing slippage and preventing damage to flare nuts.
Chrome Finish: Each wrench boasts a polished chrome finish for corrosion resistance and easy cleaning.
Comprehensive Metric Sizes: Includes six essential metric sizes (9x11mm, 10x12mm, 13x14mm, 15x17mm, 16x18mm, 19x21mm) to cover a wide range of applications.
Included Kit Bag: Comes with a convenient kit bag for organized storage and easy transport.

Applications

This metric flare nut wrench set is an essential addition for professionals working on various vehicle systems and industrial machinery. It is ideal for tightening and loosening line nuts on hydraulic lines, fuel lines, and automotive brake lines, where standard open-end wrenches might strip softer brass or aluminum fittings. Mechanics will find this set invaluable for maintenance and repair tasks on cars, trucks, and heavy equipment, ensuring secure connections without damaging components.

Specifications

Material: Chrome Vanadium Steel
Finish: Chrome
Set Contents:
- 9 x 11mm Flare Nut Wrench (127mmL)
- 10 x 12mm Flare Nut Wrench (141mmL)
- 13 x 14mm Flare Nut Wrench (157mmL)
- 15 x 17mm Flare Nut Wrench (173mmL)
- 16 x 18mm Flare Nut Wrench (181mmL)
- 19 x 21mm Flare Nut Wrench (194mmL)