Security screws also known as one way screws are very simple in design.
Remove security screen door bolts.
The set includes 3 tools of different sizes to accommodate screws ranging in size from 4 to 14 and larger.
The sloped shoulder security screws described above are the type commonly used on security screen doors.
An old worn screwdriver will probably slip off the notch.
They are slotted screws and can be installed with a standard slotted screwdriver.
They are available in either flat head or round head design in sizes ranging from 6 to 14.
Removing them is another matter.
For this reason you remove a security screen door unit intact.
This set is ideal for driving and removing one way screws.