Rigging Wire replaces Cotter Pin

[Brion Toss]

Hello,
Cotters rarely encounter serious shear, but when they do, they need to be stouter than a piece of wire that was used because an actual cotter wouldn't fit. Cotters are also less likely to become brittle and fall out. And so forth.
A washer under the tangs is likely a very good idea, so long as it doesn't result in the tang's resting on the threaded portion of the bolt (weaker there).
Tuning is straightforward for these rigs. Have you seen my video on the topic?
Fair leads,
Brion Toss