Kobiconn Phone Jacks The Phone Jacks listed below have been modified by the manufacturer. Please be advised that the Nut and Thread Pitch for these Jacks has changed to P = 0.75 thread with a 10mm nut. Please contact a Mouser Technical Sales Representative for further assistance. 161-1650-EX 161-5425-EX 161-1640-EX 161-7300-EX 161-7100-EX 161-5435-EX 5-0407-10