3/8-16 Tri-Groove Tamper Proof Security Nuts Tamper Proof Security Nuts #30 Trident Vandal Resistant Lock Nut Security Fastener

Our conical tri-groove security nut features exclusive 3 longitudinal slots. Only the matching special tri-slot socket can grip and twist the nut

Standard pliers, wrenches or pry tools cannot catch the surface at all, effectively stopping unauthorized disassembly, theft and vandalism for all outdoor installations.

Different from disposable shear nuts that break after one use, this trilock nut can be repeatedly installed and removed with the dedicated socket.

Great for equipment routine inspection, solar panel maintenance and sign replacement without damaging fasteners.

Tapered cone design works well for deep holes and narrow mounting gaps with limited side operation space.

It locks firmly against mounting surfaces to maintain stable fastening even on trailers, mining equipment and solar racks with constant shaking.