Spring loaded contacts & probes are key components used in laboratory plug connectors and test sockets to make reliable yet removable contact interfaces for application testing.Spring loaded contacts consist of spring elements mounted inside a metal sleeve or body.They are designed to provide a stable contact normal force when mated with the matching plug pin or probe.Common spring technologies are spiral springs or hinged spring flappers.Probes are short test pins with a sharp or chisel tip that typically go into spring loaded sleeves.They are meant to provide a temporary interface for a device under test (DUT) as opposed to permanent soldered connections.