Item Type: Self Tapping Threaded InsertsQuantity: 20PcsMaterial: Stainless steelProduct Size:Female Thread: M3x0.5Male Thread: M5x0.5Length: Approx. 6mm / 0.24inReference Hole Drilling Diameter:Plastic: 4.5-4.6; Alloy: 4.6-4.7; Cast Iron: 4.7-4.8Minimum Drilling Depth: Approx. 8mm / 0.31inPackage List20 x Self Tapping Threaded Inserts1SELF TAPPING FUNCTION: Self tapping screw sleeve has self tapping ability, the base material does not need to tap teeth in advance, saving cost 2TENSILE RESISTANT: Self tapping threaded inserts and finished product has big contact surface, can withstand strong tension 3NON LOOSE: Slotted self tapping threaded inserts have strong resistance to vibration and can prevent loosening 4GOOD SEALING: Self tapping screw insert has no clearance with the base material, and the base material also has good air tightness if contains bubbles 5APPLICABLE SCENARIO: Self tapping sleeves has been widely used in automobile industry, rail car industry, marine industry, household appliances, construction machinery, service machinery, electronic products, engineering plastics, advanced composite furniture, aluminum die casting and other industries