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.
Thread Size. THREAD SIZE. There are many thread ticket numbering systems used in the world of sewing and many times this can become confusing. Obviously it is important to select the right thread size and thread type for the application.The Worldwide Size Chart helps you do this and more.Click on the links below to quickly find the information you are looking for. Worldwide Thread Size Comparison. 1  English. 2  Chinese.bviously it is important to select the right thread size and thread type for the application. The Worldwide Size Chart helps you do this and more. Click on the links below to quickly find the information you are looking for. Worldwide Thread Size Comparison. 1  English. 2  Chinese.