True-Lock LLC, based in Boise, Idaho, is a premier aviation parts manaufacturer and engineering company that mitigates vibration/wear and tear on primarily aircraft/rotorcraft parts. True-Lock is the only patented aviation wheel fastener system in the world that has been awarded an STC (Supplemental Type Certificate) by the FAA for axle nut technology. True-Lock LLC holds over 1,000 FAA certifications for aviation fastener design. True-lock fasteners pay for themselves by reducing downtime and increasing the life of moving components. All systems are guaranteed for the life of the aircraft or vehicle. Trucking, military, mining, oil refining and marine craft are other industries of focus where vibration mitigation technology is a necessity, making True-Lock LLC fasteners the world standard.