Torx Security tamperproof screws. For an extra measure of security when theft may be an issue.

#8x.75 in. stainless steel tamperproof screw. There is a security pin in the center of the screw head preventing a Torx screw driver head from being inserted. This screw can only be screwed-in by using the special driver bit manufactured for this screw. (see catalog for separate driver bit)

Price is for a lot of 24 screws and 1 driver bit.