Assembly Solutions: Tamperproof Fastener Is Always at the Right Torque
Apogee Designs Ltd. (Baltimore) has invented a tamperproof fastener that cannot be overtightened or undertightened.
Apogee's Eclock eccentric locking fastener can be made from steel or titanium and feature any thread profile. The head of the fastener has a cylindrical pocket. At the bottom of the pocket, slightly off center from the fastener's axis, is a plastic or aluminum shear pin.