Specification Brand : 80/20 BulletPoint1 : This 80/20 T nut measures .539 x .343 x .866 long with a 5/16-18 thread and comes with a ball spring. For use with 1515,1530, 3030 and any other 1.5" based aluminum extrusions. BulletPoint2 : Made out of 1045 steel with a bright zinc finish. The ball spring allows you to hang this t slot aluminum extrusion accessory in a vertical position. BulletPoint3 : This t-nut works with 5/16-18 bolts (not included) to attach joining plates, corner brackets, hinges, and other t track accessories to 80/20 aluminum extrusion. 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 : Silver DriveSystem : Slotted ExteriorFinish : Zinc FinishType : Zinc GradeRating : Industrial ItemName : 8020, 3917, 15 Series 5/16-18 Steel Roll in T-Nut with Ball Spring - T Slot T-Slotted Accessories for 80/20 Aluminum Extrusion - Hardware Nuts (10 Pack) ItemPackageDimensions_Height : 8.2042 centimeters ItemPackageDimensions_Length : 1.397 centimeters ItemPackageDimensions_Width : 3.6068 centimeters ItemPackageQuantity : 10 ItemTypeKeyword : t-nuts Manufacturer : 80/20 Inc. Material : Steel MeasurementSystem : Inch MetalType : Alloy Steel ModelNumber : TANIQIACAfsitpvym4g-13 NumberOfItems : 1 NumberOfPieces : 10 PackageLevel : unit PartNumber : 3917-10 ProductDescription : The roll-in T-nut with ball spring is a fastening option that loads from the profile ends or side, which is helpful for applications where the ends are inaccessible. The ball spring holds the T-nut in the T-slot, even when the profile is in a vertical position, simplifying the assembly process. ProductSiteLaunchDate : 2020-01-09T19:39:36.778Z Size : M8 SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 31161700