A needle designated with “90/14” signifies a specific type of sewing machine needle optimized for heavier fabrics like denim, canvas, and upholstery. The “90” denotes the needle’s diameter in hundredths of a millimeter, while the “14” refers to the equivalent needle size in the American sizing system. This particular needle features a sharp point and a slightly rounded shank, facilitating smooth penetration through dense materials without causing excessive damage.
Selecting the appropriate needle size is crucial for successful sewing projects. Utilizing a size 90/14 needle when working with heavyweight materials prevents skipped stitches, needle breakage, and fabric damage. This selection also contributes to a more professional finish and extends the life of the sewing machine. Historically, the standardization of needle sizes simplified the process of selecting the correct needle for a given task, significantly improving the efficiency and quality of sewing.