20pcs Self-Tapping Threaded Insert, M3 x 6mm Self-Tapping Slotted Screw Thread Insert Nut for Helical Repair

Specifications: Material: SUS303 stainless steel; Internal thread size: M3 (diameter) x 0.5 (pitch); Length: 6mm; External thread size: M5 (diameter) x 0.5 (pitch); Drilling diameter: 4.5~4.6mm (plastic); 4.6~4.7mm (aluminum alloy); 4.7~4.8mm (cast iron); Min. drilling depth: 8mm; Quantity: 20pcs; Weight: 9g (approx.); Package includes: 20 x threaded inserts