With a first kind of contact members, FPC can be inserted without insertion force, and with a second kind of contact members, the FPC can be inserted with low insertion force.

A land-grid array die package socket is configured for low- or zero insertion-force assembly with a land-grid array die package.

A tolerance ring (128) which provides a low consistent installation force profile as a rotatable member, such as a disc drive actuator (110), is installed onto a stationary member, such as a post (126) extending along an axis.