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

BM2487-5 Plain Ball for Aircraft (5/32 inch Cable Size) | McFarlane Aviation BM24875
BM2487-3 Plain Ball for Aircraft (3/32 inch Cable Size) | McFarlane Aviation BM24873 