Specification Brand : RAW PRODUCTS CORP BulletPoint1 : High quality tamper proof security nuts BulletPoint2 : 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. BulletPoint3 : 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. BulletPoint4 : Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts. BulletPoint5 : May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately Color : Silver DriveSystem : Tri-Groove ExteriorFinish : Aluminum,Copper,Aluminium,Zinc ExternallyAssignedProductIdentifier1 : 0720572143522 ExternallyAssignedProductIdentifier2 : 720572143522 FinishType : Polished IncludedComponents : T-Nuts ItemDisplayDimensions_Height : 0.24 inches ItemDisplayDimensions_Length : 0.39 inches ItemDisplayDimensions_Width : 0.16 inches ItemDisplayWeight : 0.2 pounds ItemName : Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 5/16"-18 - QTY 250 ItemPackageDimensions_Height : 1.5 centimeters ItemPackageDimensions_Length : 14 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 250 ItemTypeKeyword : tamper-resistant-nuts Manufacturer : RAW PRODUCTS CORP Material : Stainless Steel MeasurementSystem : Inch MetalType1 : Zinc MetalType2 : Aluminum MetalType3 : Copper MetalType4 : Magnesium ModelName : Mavaolxe1h2d759i ModelNumber : 000028aa241007qmaneu PartNumber : 6206-022-0038 ProductDescription : Tri Groove security nuts feature a tapered diameter, making the nuts resistant to gripping devices. Security nuts are installed using a special Tri Groove socket, which grips the indentations along the outside of the fastener to turn the nut along a thread. Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts. ProductSiteLaunchDate : 2017-05-03T07:00:00.000Z Size : 1.00X0.40X0.60CM Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 31161700