Insertion is a way to create a connection that can be assembled and
disassembled repeatedly without problems. A metal part is inserted into the
thermoplastic part and the connection is made using a standard screw or bolt.
Bosses are required in most cases. They should be
properly designed to avoid sink-marks, internal stresses and warpage.
Sink-marks will be less visible on dull surfaces, light colours, machined
surfaces and round edges.
Click here for the
guidelines for threaded metal inserts
