Specification Brand : Niiyen BulletPoint1 : MATERIAL:Hammer Head Nut is made of high-impact Carbon steel material, with strong and not easy to wear,high strength and high hardness. Even if it is often in usage, it will not rust easily, and it is strong. Long service life, no need for frequent replacement, can work long term in all weather conditions. BulletPoint2 : PORTABLE DESIGN:Hammer Head Nut adapts portable design. The surface of the T-slot nut is carefully treated, and the internal structure is strong and not easy to break. The edges are smoothly and won't hurt your hands when using these T-slot nut set. BulletPoint3 : PACKAGE AND SIZE:You will receive 50pcs M4*10*5 nuts.They are simple to use and convenient to connect aluminum contour to other parts. Hammer head drop in T slot nuts assortment kit, They can be directly into the aluminum slot hole in any of the assembly post, back spring balls can be fixed its position which make installation very simple and reliable. BulletPoint4 : EASY TO USE: The T-slot nuts set can be easily installed with a hexagonal wrench, the thread is clear, and it can be directly inserted into the aluminum slot of any mounting column, and the fixing effect is good. BulletPoint5 : MULTIPLE USAGE SCENARIOS:Hammer Head Nut has a wide range of application scenarios.These drop in t nuts are suitable for 20 series aluminum contour, such as 3D printer, construction industry aluminum frame structure, CNC lasers cutting machine, CNC router, robot project, etc. Color : Silver ExteriorFinish : Nickel FinishType : black oxide ItemName : Niiyen 50pcs Hammer Head Nut T Slot Nut Aluminum Contour Nut Carbon Steel Nut T Slot Fastener Half Round Roll T Nut for 20 Series Aluminum Accessories ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 6 centimeters ItemTypeKeyword : t-slot-nuts Manufacturer : Niiyen Material : Steel MetalType : Alloy Steel ModelName : Niiyennztd8rfqgu ModelNumber : Niiyennztd8rfqgu NumberOfItems : 1 PartNumber : Niiyennztd8rfqgu ProductDescription : Specification: Material: Carbon steel