Application: Self-tapping thread insert can increase thread strength for new products, which are used throughout the metal and plastic processing industry. Instructions: Due to capacityself-tapping, the base material does not need to be tapped.àadvance.They can be screwed directly into the special holes reserved by the base material at hand.using an economical and aesthetic installation tool. Good sealingàair tightness: there is no play with the base material and the base material also has good airtightness.àthe air if it contains bubbles. Specifications: Material: SUS303, SUS316, carbon steel; Quantity: 50pcs; Weight: approx. 192g. Easy and quick to useeasy to install - only requires one assembly tool. It has a large contact area with the finished product, strong resistance to wear and tear.traction. Strong resistance to vibrations which can prevent loosening.