The term refers to the flattened portion of a sewing machine needle’s shank. The shank is the part of the needle that is inserted into the sewing machine. This flattened area, present on many needle types, orients the needle correctly within the machine, ensuring proper alignment with the hook or shuttle. A specific needle designation, such as 100/16 134, indicates a standardized size and type; the shank design remains a critical aspect of its functionality within compatible machines.
The presence of this flattened section is crucial for proper stitch formation and prevents skipped stitches or damage to the fabric and machine. Its design ensures consistent and reliable sewing. Historically, this feature evolved to improve the precision and efficiency of sewing machines, allowing for greater automation and higher-quality results.
