
In public environments vulnerable to vandalism, theft or threats, anti-tamper fasteners ensure structural integrity and peace of mind. Hafren’s Kinmar® Permanent offers the highest security level: unidirectional fixed nut installable only with dedicated socket, providing certified clamping and clean finishes without cuts, ideal for permanent applications where removal is impossible.
For scheduled maintenance needs, the Kinmar® Removable (level 4 security) combines bidirectional flexibility with a segmented design removable only with specific key. Extremely attack-resistant, it offers affordable cost, high aesthetics and robustness for installations requiring occasional controlled access.
Permanent for total protection, Removable for smart maintenance: choose the security level suited to your public needs.