Detention & Institutional security fasteners.
Correctional, behavioral-health, and secure institutional environments require the highest tamper resistance and smooth, no-purchase heads.
Request a Quote →Detention and behavioral-health facilities can’t rely on a drive that merely discourages tampering — they need a head that gives determined hands nothing to grip. Tri-Groove’s smooth, rounded profile and break-away nuts are built for exactly this: no slot, no lobes, no edge for pliers or an improvised tool to catch.
Security fasteners suited to this application.
Tri-Groove Screws
Tri-Groove machine and sheet-metal screws for high-security, anti-theft use.
Tri-Groove Sockets
Tri-Groove sockets for turning tamper-resistant nuts and bolts.
Security Nuts
Tri-Groove and break-away nuts in zinc alloy and stainless to complete a secure joint.
One-Ways
Install-only one-way screws that cannot be backed out with common tools.