Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts.
High quality tamper proof security nuts
Installed using a special tri groove socket (sold separately)
316 stainless steel nuts won't corrode from water, chemicals, or salt spray.
Tri-groove nuts are narrower than sloped and drilled spanner nuts to fit in tight spaces. Install with a tri-groove socket bit and either a drive handle or an open-end wrench (all sold separately).
Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.