Patent ID: 6015251
Filing Date: 2000-01-18
Classification: F16B

Abstract:
A secure threaded fastener, comprising:a nut provided with an internally threaded hole, said internally threaded hole having a smooth section free from any internal thread, said smooth section having a diameter equal to or larger than a major diameter of said nut; anda coil spring radially and outwardly bent at both ends and fitted over said smooth section, with one end of the spring being caught by a fixing slot of a nut's body, thus forming a fixed end of the spring, and the other end of the spring being movably received in a guide slit of the nut's body, thus forming a movable end of the spring, wherein a hook slit is provided at the guide slit of the nut's body for selectively hooking or releasing the movable end of the spring, thus allowing the position of the nut to be selectively changed between a secured position and a loosenable position.