How to Remove One-Way Screws in Security Doors

One-way screws have a specially designed head that allows the use of a regular screwdriver to install the screws, but prevents the turning of the head in the opposite direction for removal. These one-way screws are used on security doors as a theft deterrent. When removal of a one-way screw is required, the procedure used creates an edge that can be gripped to extract the screw.

Things You'll Need

• Rotary tool with grinding wheel
• Vise-grips or flat-jawed locking pliers
• Penetrating oil

Instructions

1. Grind a flat space on two opposing sides of the one-way screw head using a rotary tool equipped with a grinding wheel.

2. Apply a small amount of penetrating oil to the perimeter base of the one-way screw's head. This lubricates for movement of the screw shaft during removal.

3. Grip the flattened sides of the one-way screw's head with a pair of vise-grips or locking pliers, then firmly turn the screw head counterclockwise to remove the screw.

Tips & Warnings

• A hacksaw can also be used to remove the heads of deformed or rusted one-way screws that do not respond to this procedure.

Resources

• The Natural Handyman: Security Screw Removal Page