The retaining nut threads onto the threaded section of the control on the back side of the instrument panel to secure the control. Replacement retaining lock washer p/n EC111 for all McFarlane controls that attach to the instrument panel with a 1/2-20 thread.
- FAA-PMA (Sub-Component of Approved Article) Approved
- Manufactured by McFarlane Aviation, Inc.

MS20664C2 Single Shank Ball, McFarlane Aviation
MS20663C4 Double Shank Ball
BM2487-2 Ball, 1/16 inch Cable Size | BM24872
R1224S-28 VOLTAGE REGULATOR 28V | Plane Power
AF1441003-1T Titanium Cessna Axle, Airforms Inc., FAA-PMA Replacement | AF14410031T
AF2643092-1030 Torque Link Bolt, .030 Oversize, Cessna Caravan 208 | AF26430921030 