TAPPET is a playable word

tappet Scrabble® Dictionary

noun
pl. tappets
a sliding rod that causes another part of a mechanism to move
31 Playable Words can be made from "TAPPET"
   2-Letter Words (7 found)
   3-Letter Words (17 found)
   4-Letter Words (6 found)
   6-Letter Words (1 found)