Chastity and orgasm denial discussion

My spouse purchased a red chili sissy cage with the Sicurity screw feature. The issue is that it comes with specific bits I already have at both home and work (Torx with pin). Since I’m a floor manager at an auto body shop, we keep plenty of those security tools on hand. Could you assist me in locating a tamper-proof screw? It needs to be M4 size (metric threads). Thanks