Personally, I think AICC should be punted over the goal post of so long compliance standards. and some vendors like to offer multiple choices, and yes AICC does different things, but so does driving a moped and I rarely seen people cruising down the interstate on one (unless you live in LA).
Part One: How to Measure Thread Size. 1  In general, the thread should match the fabric in size and weight. For heavier, thicker fabrics, use heavier thread. 2  Heavier threads create more visible stitches. 3  V-69 is the heaviest size recommended for sewing machines. 4  Heavier threads are stronger.
Cotton ticket gives the yarn size of the 3-ply thread with the same weight as the thread being measured. For example, 30/3 is cotton ticket 30, while 30/2 is cotton ticket 45 (45/3 = 30/2). You have to know which of these systems is being used, or your thread sizes can be off by a factor of three!hese sizes are the denier measurement divided by 10. (A size 554 thread is about 1/32â³ or 0.8mm in diameter, which is as large as some decorative trims!). Linen count and wool count sizes are related to the cotton count system, but they use different units of length.