LOCKNUT is a playable word

locknut Scrabble® Dictionary

noun
pl. locknuts
a nut which keeps another from loosening
43 Playable Words can be made from "LOCKNUT"
   2-Letter Words (8 found)
   3-Letter Words (11 found)
   4-Letter Words (17 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)