Check the listing for details. Self Tapping Threaded Inserts M3 M5x6mm Carbon Steel Repairing Nuts 40pcs. Condition: New. Listed at 18.46 USD. Description:1. Material: Carbon steel material, suitable for aluminum alloy, copper alloy, plastic and other substrates with low engineering strength. Strong resistance to vibration, can prevent loosening.2. Advantages: With self-tapping capability, the base material does not need to be tapped in advance. It has a repairing effect on the female thread of the broken tooth, can continue to use the same screws by using the self-tapping screw sleeve.3. Application: Installation easily, and only one assembly tool is required. It is widely used in household appliances, the shipping industry, construction machinery, electronic products, modular furniture and other places.Specification:Product Name: Threaded InsertsMaterial: Carbon SteelFinish: Nickel PlatedColor: Silver ToneInner Thread Size: M3 x 0.5((Dia.x Pitch)Outer Thread Size: M5 x 0.