Flare Identification Chart
Tube + or - .0073/16 .272 1/4 .352 5/16 .418 3/8 .493 1/2 .632 Tube + or - .0103/16 .270 1/4 .350 5/16 .415 + or - .0153/8 .475 1/2 .645Double/SAE 45 Degree FlareDIN/ISO Bubble FlareAN/JIC 37 Degree Single Flare90DEG+ or - 445DEGTool MarksAcceptable Less ThanTube RequiredNo Nicks AllowedDebur Die Blocks If NeededRadius RequiredNo Nicks AllowedDebur Die Blocks If MarksAcceptable Flare Less ThanTube + or - . RequiredNo Nicks AllowedDebur Die Blocks If NeededFlare Less ThanTube MarksAcceptable 115DEG+ or - that the Flare is the correct profile for the components involvedAutomotive fittings are always a 45 deg. double or DIN flareNever use a single 45 degree Flare with automotive nuts and fittingsA 37 degree single Flare is acceptable for use in AN/JIC nuts and fittings with Cunifer seamless tubingCommon CrossthreadsNever interchange a fully threaded nut with a nut with non-threaded leadNever interchange a nut with anon-threaded lead with a fully threadednutAlways check carefully for diameter and thread pitch Flare Identification Chart195 Federal Hill Road Oxford, MA 01540 Phone: 508-987-2660 Fax: 508-987-2661 10mm x Asian nut with SAE/double Flare10mm x metric nut with DIN/ISO flare3/8 x 24 UNF British Girling nut with old style bubble flare3/8 x 24 UNF American nutwith SAE/double flareNote the non-threa
Determine the length of the brake tube required, using stiff wire, solder, tape measure or the old brake lines as a pattern. Cut to the required length using a tube cutter. Do not distort the tube by over-tightening it in the cutter. File the ends to ensure it’s square and remove the burrs from the inside and outside edges. Blow
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