It seems like it's basically like CPU socket spring pins, which I would assume have much higher thermal loading.
by just pictures Intel spring pins are shorter and broader on the base side and with a steep rising angle. These look (quite) longer and with a lower rising angle.
I guess these pins are more feeble and imprint less force than CPU spring pins.
You're talking about heat cycling? What affect does that have on a spring? Are the temperatures here even extreme for a piece of metal?