Needles for Embroidery Machines, Household Flat Shank Organ HAx1ST, 15x1ST, Schmetz 130/705H-E, and Singer Chromium, Commercial Round Shank |
What does needle size #90 mean? The number classification of a needle refers to the diameter of the blade (#90 means .9mm in diameter). The larger the number, the larger the needle's diameter of the blade. Larger needles also have a larger eye making them ideal for thicker threads. If a thread moves through an eye that is too small for the diameter of the thread, the thread may heat up, skip stitches, shred or break.