Problem is it is almost impossible to stay secure by having a screw with a trick head, and in these days of ebay and so on, anyone can have a set of last year's highest security bits for a few quid.
These M3.5 security screws may be better as tamper resistant screws for sockets, but do order the right length, as being stainless steel they do not cut to size like brass would. Unlike the one in your pic, will not undo with a couple of crossed spikes, but even so there are kits of secuity bits readily available, ( including the 5 point bits as well )to defeat pretty much all..
Problem is it is almost impossible to stay secure by having a screw with a trick head, and in these days of ebay and so on, anyone can have a set of last year's highest security bits for a few quid.
These M3.5 security screws may be better as tamper resistant screws for sockets, but do order the right length, as being stainless steel they do not cut to size like brass would. Unlike the one in your pic, will not undo with a couple of crossed spikes, but even so there are kits of secuity bits readily available, ( including the 5 point bits as well )to defeat pretty much all..
