Perma Core polyester thread is a high-performance, core-spun sewing thread designed for durability, strength, and efficiency. Featuring a strong polyester filament core wrapped in polyester fibers, it delivers superior tensile strength, excellent abrasion resistance, and reduced breakage. Commonly used as an all-purpose industrial and commercial thread, it ensures smooth, even stitching in a wide range of applications. With exceptional colorfastness and resistance to UV rays, chemicals, and moisture, this thread is ideal for apparel projects. Its superior strength allows for the use of smaller thread sizes compared to cotton-wrapped or staple-spun alternatives. The thread weight is classified as Tex 40, equivalent to a 25-weight thread, making it well-suited for medium to heavy-duty applications. The Tex 40 measurement indicates that 1,000 meters of thread weighs 40 grams. The 6,000 yard cone is perfect for serger, overlock and industrial machines, providing a reliable and long-lasting supply. Made in the USA, this 100% polyester thread is sourced as deadstock from Stay Fast, a former supplier for major lingerie brands, ensuring both quality and sustainability.