Flaring

The flared "head" need not be perpendicular to the tube centerline as shown. However, even if a low included angle of flare is specified, the flared diameter formula limit would still apply.

Note that as the tube is flared, the metal tends to thin at the edge. This condition must be assumed as a design consideration and is most pronounced with heavier walls and the 90 degree flare shown in the sketch.

FEATURE	LIMITS	TOL. (IN.)
Flare diameter	1.4 x O.D.	± .004
Radius under head	.050" (min.)	± .002
Transition radius	Under head rad. + wall	---
Overall length	---	± .003