Description:  These self-tapping thread inserts can be installed directly without prepping. It can be directly screwed into the specific hole reserved by the base metal, which is widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, construction machinery, etc.    Features:  1. Made of high-quality carbon steel, wear-resistance, durable in use.  2. Steel thread inserts can effectively improve screw connection, greatly improving reliability.   3. Strong resistance to vibration which can prevent loosening, enhance connection strength and improve connection.  4. These self-tapping thread inserts can be installed directly without prepping. It can be directly screwed into the specific hole reserved by the base metal.  5. Widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, construction machinery, etc.    Specification:  Material: Carbon Steel;   Self-tapping inserts;  Specifications  Quantity;  ;  M3x0.5-M5x0.5-L6 10;  M4x0.7-M6.5x0.75-L8 10;  M5x0.8-M8x1.0-L10 10;  M6x1.0-M10x1.5-L10 5;  M8x1.25-M12x1.5-L15 5;  M10x1.5-M14x1.5-L18 5;  M12x1.75-M16x1.5-L22 5;    Package Included:  10 x M3x0.5-M5x0.5-L6;  10 x M4x0.7-M6.5x0.75-L8;  10 x M5x0.8-M8x1.0-L10;  5 x M6x1.0-M10x1.5-L10;  5 x M8x1.25-M12x1.5-L15;  5 x M10x1.5-M14x1.5-L18;  5 x M12x1.75-M16x1.5-L22