Deep thread round nut for Switchcraft nickel switches. "Deep Round Nut for Toggle Switches" is an amazing replacement nut for your 3-way toggle switch when the threaded shaft of the toggle switch does not stick up high enough out of the body of your guitar. The deep round nut has an extended threaded column. The deep round nut’s extended threaded column screws down in the hole to secure to the toggle switch. Commonly used in thicker body and Les Paul style guitars.