This is serious work best done by highly organized groups of more or less interchangeable human parts.
Quarterbacks with ratings in the 70's can be little more than interchangeable parts.
Now, instead of traditional guard play, you get interchangeable parts.
Fed workers, like military people, are intended to be interchangeable parts.
They are eight interchangeable, streak-shooting parts, except only five of them can play at a time.
Utilization of interchangeable parts was an important innovation in 1908.
A former Rangers coach said they're just a bunch of interchangeable parts.
They are just two of the interchangeable parts in his current collection.
They used their interchangeable parts on both ends of the floor to make Indiana look very normal.