Date:    9-15-2014
Number of Hours:    1.50
Brief Description:    Brake backing plates
I installed the anchor nuts on the two backing plates. The rivets are countersunk so the holes have to be recessed.

I used these anchor nuts INSTEAD of those called for by Sonex:
- MS21078-3, Two Lug Anchor Nuts

The type called for by Sonex have two major problems:
1. They are easily stripped by the anchor screws. I know from experience.
2. The screws can back out.

These alternate anchor nuts have the plastic lock-nut inserts to prevent both issues. Use washer-head screws (photo 2) in these. I had to enlarge the holes in the backing plates slightly to make sure the screws would fit.