Specification Brand : 80/20 BulletPoint1 : This t-nut measures .638 x .222 x 2.813 inches long, has two 5/16-18 threaded holes, loads from the profile ends, and has a pilot thread projection that adds additional threading for increased strength. BulletPoint2 : This t-nut is made out of 1010 steel with a black zinc finish and is compatible with our 15 Series extruded aluminum profiles or 1.5" based t slot aluminum extrusion. BulletPoint3 : Used with a 5/16-18 bolt to mount joining plates, brackets, or other t-track accessories. Works great for our 1515, 1530, 3075, 3030, and many other 1.5" based extrusions. BulletPoint4 : This high quality and sturdy 5/16-18 nut will make a great addition to your fasteners hardware toolbox. Perfect for any home improvement enthusiast or general DIY'er. BulletPoint5 : This t-nut can be used in a wide variety of applications including 3d printers, cnc machine, building industrial aluminum frame structures, CNC laser cutters, Robotics Projects and more. Color : Black DriveSystem : Slotted ExteriorFinish : Zinc ExternallyAssignedProductIdentifier : 6942343622034 ExternallyAssignedProductIdentifier1 : 748675686821 ExternallyAssignedProductIdentifier2 : 0748675686821 FinishType : Black Zinc GpsrSafetyAttestation : 1 GradeRating : industrial ItemName : 8020, 3279, 15 Series 5/16-18 Double Threaded Slide in Economy T-Nut Steel T-Slot Accessories for 80/20 Aluminum Extrusion Hardware Nuts (25) ItemPackageDimensions_Height : 8.3058 centimeters ItemPackageDimensions_Length : 3.9878 centimeters ItemPackageDimensions_Width : 8.1026 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : t-nuts Manufacturer : 80/20 Inc Material : Metal MeasurementSystem : Inch MetalType : 1010 Steel ModelNumber : f24032800ux0325 NumberOfItems : 25 NumberOfPieces : 25 PartNumber : 3279-Parent1 ProductDescription : The double slide-in economy T-nut is a fastening option that saves time and simplifies the assembly process. It loads from the profile ends and is available with options in size and finish. The pilot projection adds additional threading for increased strength. Tip: Position the pilot projection down in the T-slot to avoid an uneven connection or crashing. ProductSiteLaunchDate : 2014-03-27T14:50:27.587Z Size : M10 SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161700