means for applying compressive forces to the IC chip, the insulating board and the circuit board, to force {HEAD ~ the connector elements} into {TAIL ~ contact} with the IC chip contact areas and the circuit board face contact areas 
into
means for applying compressive forces to the IC chip , the insulating board and the circuit board , to force { HEAD ~ the connector elements } into { TAIL ~ contact } with the IC chip contact areas and the circuit board face contact areas
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH