The term 'hammer parts' refers to the components of a hammer, which is a tool used for pounding or driving nails into wood or other materials. The two crossword solutions for this term are 'peens' (5 letters) and 'CLAWS' (5 letters). Peens are the rounded ends of a hammer head, which are used for striking and shaping metal. CLAWS are the curved, pointed ends of a hammer head, which are used for extracting nails from wood.