They are available in either flat head or round head design in sizes ranging from 6 to 14.
Remove security screen door bolts.
An old worn screwdriver will probably slip off the notch.
This set is ideal for driving and removing one way screws.
Removing them is another matter.
Use a good quality screwdriver with sharp square edges.
The set includes 3 tools of different sizes to accommodate screws ranging in size from 4 to 14 and larger.
They are slotted screws and can be installed with a standard slotted screwdriver.
The sloped shoulder security screws described above are the type commonly used on security screen doors.
But for security purposes the hinge pins are not removable and the bolts used to attach the frame are designed to tighten only.