Typically, we’ll throw a simple helical spring lock washer on a stud or bolt, torque down the nut nice and snug, and call it a day, feeling like we’ve made a secure joint. But nothing could ...

Lockbolts are two-piece fasteners that consist of a headed, parallel-shank pin with a serrated end and collar. An assembly tool is used to swage the collar onto the serrated grooves in the pin and ...

Kick-in reinforced is the same test using an aftermarket Box Strike in place of the included strike or, for surface-mount locks, 3-inch screws; models scoring Excellent as sold were not retested.