1Made of 45 steel, black oxide finish, features high hardness, high strength, durable in use 2Undersized to fit machine table slot case hardened 3It is used for T-slot aluminum extrusions to connect other parts 4Bottom of T-Slot nut is staked to prevent the stud from protrusion 5T-Slot nuts enable the user to add clamps to a fixture without tearing down existing clampsDescriptions:ThisT slot nuts are made of 45 steel, black oxide finish, features highhardness, high strength, durable in use. It is used for T-slot aluminumextrusions to connect other parts. Bottom of T-Slot nut is staked toprevent the stud from protrusion.Features:Made of 45 steel, black oxide finish, features high hardness, high strength, durable in use.Undersized to fit machine table slot case hardened.It is used for T-slot aluminum extrusions to connect other parts.Bottom of T-Slot nut is staked to prevent the stud from protrusion.T-Slot nuts enable the user to add clamps to a fixture without tearing down existing clamps.Specifications:Material: 45 steelSurface treatment: black oxideThread: M14Size: as the pictureWeight: 277gPackage Included:5 x T Slot Nuts