Specification Brand : uxcell BulletPoint1 : Specification: Material: Brass; Thread Size: M4 x 0.7mm(Dia*Pitch); Overall Size: 4mmx5mm/0.16inchx0.2inch;(L*OD); Package Content: 300 x Knurled Insert Nuts BulletPoint2 : [Material]: These female thread-knurled nuts are made of brass, offering good resistance to rust and oxidation, ensuring a long service life. They are also corrosion-resistant, and acid-resistant. BulletPoint3 : [Feature]: Knurling increases torque resistance and tensile strength, providing a stronger fastening. Precise and clear threading ensures stability and reliability, preventing thread slippage. The embedded nuts include guiding elements, eliminating the need for countersinking, and making the process more convenient and efficient. BulletPoint4 : [Easy to install ]: Knurled nuts are suitable for various plastic heat, including PLA, PETG, ABS, and PP, etc. After the plastic cools and solidifies around the brass sleeve, the threaded sleeve is securely fixed. BulletPoint5 : [Wide Application]: Commonly found on 3d printer beds, machine tools, cabinets, and toolboxes, it is great for crafting projects and things that require quick adjustments. GradeRating : commercial ItemName : uxcell Knurled Insert Nut M4 x 4mm L x 5mm OD Female Thread Brass Embedding Nut 300 Pcs ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 1.8 centimeters ItemPackageDimensions_Width : 6 centimeters ItemPackageQuantity : 300 ItemTypeKeyword : hardware-nut-inserts Manufacturer : uxcell Material : Brass MetalType : Brass NumberOfItems : 300 NumberOfPieces : 300 PartNumber : a24080700ux0809 ProductDescription : Descriptions: [Material]: These female thread-knurled nuts are made of brass, offering good resistance to rust and oxidation, ensuring a long service life. They are also corrosion-resistant, and acid-resistant. [Feature]: Knurling increases torque resistance and tensile strength, providing a stronger fastening. Precise and clear threading ensures stability and reliability, preventing thread slippage. The embedded nuts include guiding elements, eliminating the need for countersinking, and making the process more convenient and efficient. [Easy to install ]: Knurled nuts are suitable for various plastic heat, including PLA, PETG, ABS, and PP, etc. After the plastic cools and solidifies around the brass sleeve, the threaded sleeve is securely fixed. [Wide Application]: Commonly found on 3d printer beds, machine tools, cabinets, and toolboxes, it is great for crafting projects and things that require quick adjustments.