-Patent protected.

-One longitudinal locking channel on the bolt means more threaded surface area between the nut and bolt threads and less likely hood for cross treading.

-The tabs of the tab-lock washer create a spring fit when the tab-lock washer is engaged by the slots of the ring washer ensuring a rattle free locking mechanism.

-Maintain seat torque specifications with the Phil-Lok fastener.  The ring washer has slots spaced 90 degrees apart and because a nut has 6 sides that are spaced 60 degrees apart the ring washer can engage the tabs of the tab-lock washer every 30 degrees.  However the half way point between 30 degrees is of course 15 degrees, which is also the net maximum possible offset of the ring washer to the tabs of the tab-lock washer.  A 12 point configuration on the ring washer cuts the net maximum offset in half to 7.5 degrees!  This means that torque specific applications can be met since the net maximum offset of the ring washer is minimal!  Additionally, because of this, the Phil-lok fastener could be ideal for low torque applications.

-E-mail inquires to;

sales@phil-lok.com