Feature: 1. Wide application: This self tapping screw sleeve can be widely used in automotive industry, rail car industry, marine industry, home appliances, construction machinery, business machines, electronic products, engineering plastics, advanced combination furniture, aluminum die casting and other industries. 2. Good Airtightness: There is no gap between this self tapping nut and the base material, and the base material also has good airtightness if it contains air bubbles. 3. Strong Vibration Resistance: This self tapping screw sleeve has strong resistance to vibration, which prevents loosening and is safe and reliable. 4. Strong Tensile Strength: This self tapping screw sleeve has a large contact area with the finished product, which is strong to withstand tensile strength. 5. Excellent Stainless Steel Material: This self tapping screw sleeve is made of excellent stainless steel material, which is sturdy and wear resistant with a long service life. Specification: Item Type: Self Tapping Insert Model: Slotted Thread Sleeve Quantity: 20PCS Material: Stainless Steel Product Size: Inner Thread: M5x0.8, Outer Thread: M8x1.0, Length: Approx. 10mm/0.39in Drilling Diameter: Plastic: Approx. 7.1-7.2mm/0.279-0.283in Alloy: Approx. 7.3-7.5mm/0.287-0.295in Cast iron: Approx. 7.5-7.6mm/0.295-0.3in Minimum Drilling Depth: Approx. 12mm/0.47in. Package List: 20 x Self Tapping Insert