These ball locking pneumatic flex locator pins are used with AMWF-BU series flex locator receptacles for locating and fastening in a wide range of tooling, fixturing and assembly operations. The bushing is centered and clamped when the three balls are pushed out for high locating repeatability. When air pressure is applied, the balls retract into the pin, allowing the pin to be released from the receptacle. Locating repeatability is +/- 0.003 microns. The body is made from 4140 steel with an electroless nickel plated finish. The balls are made from 440C stainless steel. The cylinder is made from 1045 steel.