The Loxx Pull It Up Fastener Machine Screw Stud is the lower section for a cloth-to-surface installation of the Loxx Fastener System. This machine screw secures with the Nut for Loxx Pull It Up Machine Screw Stud (sold separately). Loxx fasteners secure automatically and lock tight until the button is pulled. This positive engagement is created by a stainless steel spring inside the upper head that fits around the ball head of the stud. The result is a fastener that won’t accidentally come undone but is still easy to operate.