Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 5/16\-18 - Qty 100
- Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
- The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
- Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
- May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.