The 1375820-4 is a 4-position 1-row crimp Wire-to-board Receptacle Housing with socket type contacts and latch mating retention and polarizing tab mating alignment. This crimp housing is made from glass-filled natural nylon. The CST-100 II series crimp housing is suitable for use with specified MTA-100 headers, similar competitive notched headers and CST-100 shrouded headers.