Heavy-duty needles designed for stitching thick, densely woven fabrics like denim are characterized by a strong shaft, a sharp point, and a larger eye to accommodate thicker threads. These specialized needles are typically made of hardened steel to resist bending or breaking under the stress of penetrating tough materials. An example includes a size 16/100 needle paired with heavy-duty thread.
The use of a suitable needle is crucial for achieving professional-quality results when working with denim. A correctly chosen implement prevents skipped stitches, thread breakage, and needle bending, ultimately contributing to a durable and visually appealing seam. Historically, the development of specialized needles for heavier fabrics like denim mirrored advancements in sewing machine technology, allowing for the efficient production of durable garments. These purpose-built tools have played a significant role in the mass production of jeans and other heavy-duty clothing.