FAA approved on over 1000 aircraft

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.

Piper Aircraft Models

This True-Lock system APV-SA3 is compatible with many Piper aircraft models:

PA-28-140, PA-28-150, PA-28-151, PA-28-160, PA-28-161, PA-28-180, PA-28-181, PA-28-235, PA-28-236, PA-28-201T, PA-28S-160, PA-28S-180, PA-28R-180, PA-28R-200, PA-28R-201, PA-28R-201T, PA-28RT-201, PA-28RT-201T.

Installations Instructions: APV-GA-2

Cessna Aircraft Models

This True-Lock accessory APV-SA1 is compatible with the following Cessna aircraft models:

150, 150A, 150B, 150C, 150D, 150E, 150F, 150G, 150H, 150J, 150K, 150L, 150M, A150K, A150L, A150M, F150G, F150H, F150J, F150K, F150L, F150M, FA150K, FA150L, FRA150L, FRA150M, 152, A152, F152, FA152

Installations Instructions: APV-GA-2

The True-Lock Fastener System APV-.937-16-K4 is compatible with the following Twin Cessna aircraft models:

310, 310A(USAF U-3A), 310B, 310C, 310D, 310E(USAF U-3B), 310F, 310G, 310H, E310H, 310I, 310J, 310J-1, E310J, 310K, 310L, 310N, 310P, T310P, 310Q, T310Q, 310R, T310R, 321 (Navy OE-2), 320, 320-1, 320A, 320B, 320C, 320D, 320E, 320F, 335, 340, 340A, 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B, 421C, 425

Beech Aircraft Models

The True-Lock Fastener System APV-1.50-16-K45 is compatible with the following Raytheon (Beech) aircraft models:

200, A100-1 (U-21J), 200C, 200CT, 200T, A200 (C-12A) (C-12C), A200C (UC-12B), A200CT (C-12D) or (FWC-12D) or (RC-12D) or (C-12F) or (RC-12G) or (RC-12H) or (RC-12K) or (RC-12P), B200, B200C (C-12F) or (UC-12F) or (UC-12M) or (C-12R), B200CT, B200T, 300, B300, 300LW, B300C, 1900, 1900C (C-12J)^1, 1900D^1. Note "^1": without anti-skid only.

American Champion

7AC, 7ACA, S7AC,7BCM (Army L-16A), 7CCM (Army L-16B),S7CCM, 7DC, S7DC, 7EC, S7EC, 7ECA,
7FC, 7GC, 7GCA, 7GCAA, 7GCB, 7GCBA, 7GCBC, 7HC, 7JC, 7KC, 7KCAB,
8KCAB, 8GCBC,

Other Aircraft Models

The True-Lock Fastener System APV-1.50-16-K46 is compatible with the following M7 Aerospace LP (Fairchild Aircraft Corporation, Swearingen) aircraft models:

SA26-T, SA26-AT, SA226-T, SA226-AT, SA226-T (B), SA227-AT, SA227-TT, SA26-T, SA26-AT, SA226-T, SA226-AT, SA226-T (B), SA227-AT, SA227-TT, SA227-CC, SA227-DC (C-26B)

The True-Lock Fastener System APV-1.50-12-K4 is compatible with the following Maule and Univair (Stinson) aircraft models:

Bee Dee M4, M-4, M-4C, M-4S, M-4T, M-4-180C,M-4-180V, M-4-210,M-4-210C, M4-210S,M4-210TM-4-220C,M-4-220S,M-5-180C,M-5-200, M-5-210C,M-5-210TC, M-5-220C,M-5-235C, M-6-180,M-6-235, M-7-235,M-7-235A, M-7-235B,M-7-235C, M-7-260,M-7-260C, M-7-420,M-7-420A, M-7-420AC,MT-7-235, MT-7-260,MX-7-160, MX-7-160C,MX-7-180, MX-7180A,MX-7-180B, MX-7-180C, MX-7-180AC,MX-7-235, MX-7-420, MXT-7-160, MXT-7-180, MXT-7-180A, MXT-7-420, M-8-235

Univair108, 108-1, 108-2, 108-3, 108-5