| 摘要 |
A captive screw formed of a lock screw, a cap-shaped knob, a spring member and a mounting barrel and mountable in a mounting through hole of a first panel frame and fastenable to a mounting screw hole of a second panel frame to detachably secure the second panel frame to the first panel frame is disclosed. The lock screw has a top protrusion raised from the top wall of the head thereof and a tool groove formed in the top protrusion. The cap-shaped knob is molded on the head of the lock screw by insert molding and defining an endless isolation groove on the top wall of the head of the lock screw around the periphery of the top protrusion that facilitates attachment of a hand tool to the top protrusion of the lock screw for enabling the lock screw to be driven by the user with the hand tool into the mounting screw hole of the second panel frame conveniently with less effort. |
