According to Craft Yarn Council's Standard Yarn Weight System, DK weight yarn falls into the category 3-Light yarn weight, along with light worsted yarns. DK Weight Yarn (280) DK weight yarns are recommended for projects with a knitting gauge of 5. Yarn Weight Symbol & Category Names. Shop our collection of DK weight knitting yarn. What is DK Yarn? Yarn comes in various guises and one of those variations is all about weight. Results 1 - 24 of 1000+ · Online shopping from a great selection at Arts, Crafts & Sewing Store.