Add heavy-duty, bold seams with A&E Cord Bonded Flame Retardant Nylon Thread in Tex 350. Black delivers a deep, true black that blends seamlessly with dark webbing, leather, and heavy fabrics or creates striking contrast on light materials, keeping stitch lines consistent and sharp on thick, demanding projects. Bonded nylon cord construction with a flame-retardant (FR) treatment delivers reliable sewing on projects where reduced flammability matters, along with maximum tensile strength and steady performance on dense layers and rugged materials. This Topthread is Berry Compliant, made in the USA in accordance with the Berry Amendment.
Rely on clear specs for efficient setup. This FR bonded nylon Topthread is Tex 350 (T-350), also designated Size 5 Cord, offering an extra-heavy-weight profile for bold, durable stitching on thick webbing, leather, and multiple layers of heavy material. Packaging includes a 16 oz spool, providing a substantial supply for larger runs, repairs, and project batches. Compatible with heavy-duty industrial machines built for very thick thread, such as walking-foot and leather-stitching machines, and it also works well for hand stitching; standard home machines aren't suited to this weight. Test on scrap material to dial in needle size, tension, and stitch length.
Put this flame-retardant nylon to work on heavy webbing, tactical gear, workwear, heavy bags, and rugged outdoor equipment where black stitching delivers a bold, finished look. Flame retardant thread resists ignition and slows flame spread but is not flameproof; verify that it meets the requirements of any finished item that must pass a specific fire safety standard. Avoid using thread for load-bearing or safety-critical applications, such as climbing, lifting, towing, or restraint. For best results, use steady speed, correct tension, and a clean thread path to reduce friction and skipped stitches.
