Hi-Duty Flaring Tool 370

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Part# 12-01581
MFR Model# 437-FB


37 Flairing Tool
For: 3/16", 1/4", 5/16", 3/8", 1/2" and 5/8" O.D. tubing.
437-FB For use with soft copper, aluminum and brass tubing. Hardened steel, chrome-finished cone makes exceptionally smooth, high strength flares with a radius at base of flare instead of the sharp angle formed by ordinary tools. New slip-on yoke permits use in tight quarters, allows flaring where there is little space between nut and tube end. New feed screw design provides smooth, easier operation. Positive gripping and self-gauging of tube for exact flare size. Sliding die blocks lock in place by clamp action. Satin chrome and black finish. Wt. 1.75 lbs.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Awesome tool. Just what I needed for custom power steering lines. Fast delivery with everything I ordered. Thanks!

Jonathan L Verified Purchase


September 21, 2022

Great product, great service!

Robert B
March 20, 2020

This tool makes good quality flares in aluminum tubing for aircraft use. I have used the Parker tool and some others. I prefer this tool because it makes a nicer flare.

Todd B
April 20, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Where is this tool manufactured?

It is made in the USA.

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