Updated September 06, 2019 by Rafael Perez

The 7 Best Flare Nut Wrench Sets

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Best High-End
Best Mid-Range
Best Inexpensive

This wiki has been updated 3 times since it was first published in August of 2019. Flare nut wrenches are specifically designed to tighten hex-style fasteners that are typically attached to fluid or gas lines. They have thick walls and extend around the nut more than standard wrenches, which helps prevent the rounding that can occur because of the soft metals used on plumbing nuts. Our selections considered affordability, durability, and the quality of the materials used. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki. Skip to the best flare nut wrench set on Amazon.

7. Gearwrench 81915

6. Astro Pneumatic 7120

5. Crescent CCFWS0N

4. Neiko 03323A

3. Craftsman 44096

2. Stanley Proto J3700M

1. SK Superkrome 373

Editor's Notes

September 04, 2019:

As soon as you try to use a standard open-ended wrench on a flare nut, you know that you need to buy a set of flare nut wrenches. The soft metals that these fasteners are made out of are especially prone to rounding and you need the extra corners to prevent it.

We included both full sized wrench sets like the SK Superkrome 373 and crow's-foot versions like the Neiko 03323A because they are both necessary depending on the circumstances. The SKs are very nicely made and will last a lifetime. The Craftsman 44096 are a great option for those that want a dependable tool but do not want to spend the extra money for the premium quality.

Working on hydraulic systems can be dangerous and should only be done by trained technicians to avoid personal injury and damage to equipment.


Rafael Perez
Last updated on September 06, 2019 by Rafael Perez

Rafael Perez is a doctoral candidate in philosophy at the University of Rochester. His primary focus is the metaphysics of time and the philosophy of mind, with a particular interest in artificial intelligence and antirepresentational models of the mind. He has extensive experience as a mechanic, a construction worker, and a general repairman. This has allowed him to gather a wealth of knowledge on automobile repair, auto parts, carpentry, masonry, welding, and the tools used in those trades. In his spare time, he enjoys playing guitar, woodworking, and fishing.


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