Please use the push-pull controls pages the McFarlane Aviation catalog below to confirm the EC98 jam nut’s compatibility with your aircraft.
Replacement knurled friction adjust wheel for all McFarlane controls with a 9/16″ threaded adjustable friction lock mechanism.
- FAA-PMA Approved (Sub-Component of Approved Article)
- Manufactured by McFarlane Aviation, Inc.

MC345-085-3 Propeller Control for Cessna 180K Aircraft | McFarlane Aviation MC3450853
6277CA Cabin Air Control Knob, Round, Clear, McFarlane Replacement 