No. AA0541199-1 is sold as the axle only. The attaching hardware is called out in the Cessna IPC for your model, and it varies with model and whether wheel fairings are installed. Many shops replace the retaining bolt, nuts, cotter pins, and brake bolts while the gear is apart. McFarlane stocks the MS21025-24 wheel axle nut, AN5-13A and AN5-14A brake bolts, and NAS1149 washers to complete the installation.
AA0541199-1 is an FAA-PMA approved direct replacement for Cessna main landing gear axle P/N 0541199-1, used on both the left and right main gear of tubular-gear Cessna 172 models.
It’s a good time to inspect or replace:
On airplanes with the optional main gear fairings and wheel pants, those come off for the job too, so check them for cracks and worn mounting points. McFarlane stocks the wheel axle nut, brake bolts, washers, APS BlackSteel linings, Stene main gear fairings, and Stene wheel fairings.
Cessna’s maintenance instructions provide a bonded axle installation when axle looseness is found. Removing a bonded axle requires heat per the service manual, and the removed axle is replaced. Follow the bonded installation procedure in the service manual if your installation calls for it.
The axle uses a 1.5-16 thread. On the 172R and 172S, the Cessna IPC calls out the MS21025-24 nut with an MS24665-362 cotter pin. Airplanes with wheel fairings (wheel pants) installed use the 0741047-2 fairing nut instead, which provides the mounting point for the wheel pant. Earlier models may list different nut and cotter pin part numbers, so always check the IPC for your serial number.
The common causes are cracking, corrosion, wear at the bearing journal or shoulder, impact or overload damage, and looseness at the axle-to-gear spring interface. Any crack means replacement.