[Foster]

So that was a pretty short set of questions.

Let me add some comments. I use those connectors for robots and they work well for things that don't get smacked around. I assumed that that was your application space. You have a question about being fragile (and I picked that), but mechanical stress is a failing, they really are not fragile.

I use them in car related things and they work well. Since they are ok without vibration / stress they work OK. There is also about a billion things that use these connectors they are pretty handy. I love the ones that have two or three male connectors on the back of the female, you can add new connections inline.

I use them on the boat (much to the horror of my boater friends). In theory they are a metal/metal air tight connection, in practice they corrode. I do some abatement by using clear shrink tubing to make the connection air/water resistant. There are also ones that come with plastic boots on them to do almost the same thing.

You have a question about cost and the lowest set point is 0.01 to $1. That's a pretty big range. Depending on what you buy (bare metal = 0.05, plastic ferrule = 0.11, boots = 0.12) the cost is pretty low. I might be willing to spend a few cents more for a better design, but $1 or more for each connector isn't going to happen.

Good luck on your project!