10-32 Whiz-lock Nut Zinc Plated (Box of 100)

A Whiz-Lock Nut is the brand name for a reusable, serrated flange lock nut.  When tightened, the nut’s serrated flange (protruding rim) “bites” into the mating part and creates a strong grip, making the nut resistant to being loosened by vibrations or torque (twisting). It can be used without a washer.