Specification Brand : SUVICTONG BulletPoint1 : 【BRASS THREADED INSERTS】Made from superior brass to ensure each thread insert offers exceptional thermal conductivity, break resistance and corrosion resistance. Provide long-term durability in wet and hot environment. BulletPoint2 : 【15 SPECIFICATIONS】There are 420 pieces threaded inserts for plastic in sizes M2, M3, M4, M5 and M6 with length 3mm, 4mm, 6mm, 8mm and 10mm for injection molding, electronic devices, appliances and toy models. BulletPoint3 : 【KNURLED PATTERNS】The opposite inclined spiral thread knurls ensure the tight hold and torque resistance. The precision internal threads also provide robust grip strength and a smooth installation experience. BulletPoint4 : 【INSERT EASILY】After being heated by a soldering iron or ultrasonic or hot-melt machine, the threaded insert can be quickly embedded into the plastic part. They will fit perfectly and provide high tensile resistance. BulletPoint5 : 【TWEEZERS & BOX】The knurled brass nuts are stored in a sturdy and well-organized box. A pair of practical tweezers is also included for more precise and convenient handling of these tiny components. Designed for 3D printing. BulletPoint6 : 【GOOD SERVICE】We are committed to providing customers with high-quality products. If within 30 days you are not 100% satisfied with the product, such as buying the wrong size, please feel free to contact us, we will within 24 hours provide you with a satisfactory solution. Color : Golden DriveSystem : Spline DriveSystem1 : Internal Hex DriveSystem2 : External Hex ExteriorFinish : Brass ExternallyAssignedProductIdentifier1 : 0744337418687 ExternallyAssignedProductIdentifier2 : 744337418687 FinishType : Polished ItemName : 421Pcs Threaded Inserts M2 M3 M4 M5 M6, Brass Insert Nuts for Plastic, Female Thread Heat Set Insert Assortment Kit for 3D Printing, Metric Knurled Nuts with Tweezers ItemPackageDimensions_Height : 19.304 centimeters ItemPackageDimensions_Length : 3.2004 centimeters ItemPackageDimensions_Width : 14.9098 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hardware-nut-inserts Manufacturer : SUVICTONG Material : Brass MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Brass MetalType1 : Zinc MetalType2 : Bronze ModelNumber : b20122104ap0114 NumberOfBoxes : 1 NumberOfItems : 421 NumberOfPieces : 20 PartNumber : 421-Nuts ProductDescription : SUVICTONG 421Pcs Heat Set Insert Assortment Kit ProductSiteLaunchDate : 2024-02-13T08:00:00.000Z Size : golden 421 for 3D SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 31161700