What is the correct size of staples does the CMPCS38 stapler? Wilson October 03, 2020 20:01 The Craftsman CMPCS38 works with 3/8? crown staples with lengths from ¼? to 9/16?. The attached is crown staples that will fit in the CMPCS38. Related articles Where is the date code on the model # CMES500? Comments 0 comments Please sign in to leave a comment.