Basically all .370" tip size graphite iron shafts need to be tip and butt trimmed. There is no industry standard as it will vary with different shaft manufactures and shaft models. For the Aldila Value Series iron shafts they offer an L/A combinations flex which can be cut to an L (Ladies) flex or A (Senior) flex. The L follows trim code IR6 and the A flex the IR12 code. The R/S combination flex shaft follows IR6 for the R flex and IR12 for the S flex.
At this link scroll down to the second page and you will see the Iron Trim Chart with these codes.
Date published: 2017-02-27