milled/machined sockets

[alank2]

Curiously, what is the retention/spring mechanism of these type of sockets?  Like the mill max ones where it looks like there is a circle and I can almost see another metal inside that is rolled.  I get how the wiper style sockets work, pressure between the two surfaces hold the chip pin.  How do the milled ones retain the pin?  Is the rolled metal softer and the pin presses into it?  Is there some type of spring thing going on?

[alank2]

Like this:

[Tac Eht Xilef]

if you look at the Mill-max catalogue, they have a Contact Info section with descriptions & drawings of each type.

[Benta]

Go here:
http://www.precidip.com/en/Products/Contacts.html

If you choose "Socket Contacts" you'll find drawings of the pins.

[alank2]

Thanks guys; I see the fingers and how they work from the diagrams!