And they're in...
$3.93 Brass Flat Top Cap for Chi You / King Mod - silver-plated brass contacts at FastTech - Worldwide Free Shipping
$4.35 Stainless Steel Flat Top Cap for Chi You / King Mod - silver-plated brass contacts at FastTech - Worldwide Free Shipping
I'm hoping using this for the center pin instead 101402-000 IDI | Mouser won't be an issue...
Yep, bought 5 more of each, getting some brass jam-nuts made up to make them easier to install. While soldering to the SS worked, soldering to a brass jam-nut will be a lot easier. Actually I am going to solder the ferrule end of a "Male Tab" Stay-Kon fitting to the nut, then just crimp a Female Disconnect Stay-Kon to the wire that will attach to it. I.e. it will turn it into a quick disconnect for easy installation or replacement.
Let us know how that spring loaded pin work with these Chi-You flat tops please. I have been think about buying a few.

