True-Lock aviation fastener systems reduce premature wear on your wheel-end assembly parts (brakes, bearings, axles, including tires and wheels). The True-Lock system eliminates the conventional axle nut systemís inherent inferior torque setting characteristics imposed by the castle nut and cotter pin (end-play). For more details on axle end-play and rotational wear, click here. To view the True-Lock White Paper Synopsis, click here.
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. All True-Lock fastener systems are guaranteed for the life of your aircraft and pay for themselves over time by reducing downtime and fewer replacement parts. So, If you want a wheel fastener system for your aircraft that sets the industry standard for vibration mitigation and cost reduction, then True-Lock is what you need.
The True-Lock Fastener System nose gear APV-1.25-16N4 (includes spacer) is compatible with the following Piper aircraft models: