Moderator Post (s) for this thread: >Security screwsbyBillhart on 09/01/2007
Hi Marty, if these are what I'm thinking of, the kind used on license plates to prevent theft. Then the head should be exposed a little and using a pair of vise grips on the head will allow you to back the screw out. Another method is to use a tap (aka, easy out), drill into the screw head and insert the tap and back the screw out. Hope this helps!