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.
- Dimensions: L: 4.25 x W: 2 x H: 0.25 in
- Weight: 0.0062 lbs

CA101-810089-1A Main Gear Bolt, Beechcraft | CA1018100891A
BM2487-4 Plain Ball for Aircraft (1/8 inch Cable Size) | McFarlane Aviation BM24874 