FS®-E Ultralock is a mechanical principle based on an inclined plane with movable flange (wedge plate) which, combined with an all-steel safety element (prevailing torque), compensates relative movement below the lock-nut.
The release torque, resulting from the relative movement, does hereby not lead to a loosening of the nut. On the contrary. The pre-stress within the lock-nut increases and with it the connection’s breakaway torque.
In short: Breakaway Torque > Clamping Torque
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