Specification Brand : AXK BulletPoint1 : High quality: Made from 4.8 class carbon steel, the surface is Nickel-plated for good rust resistance and better performance, if you don't use it for long time, please wipe a little oil on the surface. BulletPoint2 : Thread sizes: M3 M4 M5 M6 M8(5 different sizes, each sizes of 12pcs) used for insert into aluminum profile and connected together with screw or others. BulletPoint3 : Usage: T-nut can securely fix other connecting parts on the profile groove. During assembly, it can be automatically positioned and automatically locked. BulletPoint4 : They can be directly into the aluminum slot hole in any of the assembly post, back spring ball can be fixed its position which make installation very simple and reliable. BulletPoint5 : Wide applications: 2020 3030 4040 series aluminum profile T-nuts widely used for building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, robotics projects. BulletPoint6 : 【Includes Storage Box & Wide Application】Different sizes of locknuts and hex nuts sorted in the box for easy storage and use, and they are not easy to lose or confuse during use.Suitable for use or maintenance in a wide range of applications such as furniture decoration, automotive repair, the mechanical industry and small repairsaround shops, construction, etc. Color : Sliver CustomerPackageType : Standard Packaging DriveSystem : External Hex ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier1 : 749355461202 ExternallyAssignedProductIdentifier2 : 0749355461202 FinishType : Silver GradeRating : 304 Stainless Steel IncludedComponents : NO ItemName : AXK 96pcs T nut Set M3 M4 M5 M6 M8 T-slot Nut Kit Hammer Head Sliding t-nut for 2020 3030 4040 Aluminum Profile Fasteners ItemPackageDimensions_Height : 0.63 inches ItemPackageDimensions_Length : 2.93 inches ItemPackageDimensions_Width : 1.52 inches ItemPackageQuantity : 1 ItemTypeKeyword : t-nuts ItemTypeName : 96PCS Manufacturer : AXK ManufacturerGrade : Grade 2 Material : stainless_steel_304 MeasurementSystem : Metric MetalType : Stainless Steel ModelName : M3 M4 M5 M6 M8 T-Nuts ModelNumber : M3 M4 M5 M6 M8 NumberOfBoxes : 1 NumberOfItems : 96 NumberOfPieces : 345 PartNumber : M3 M4 M5 M6 M8 ProductDescription : Item: T nut Size: M3 M4 M5 M6 M8 Material: carbon steel 4.8 Surface treatment: nickel-plated