The material used for self-tapping screws is generally carbon steel and stainless steel: carbon steel, zinc plating; suitable for aluminum alloy, copper alloy, plastic and other low-strength substrates; stainless steel; suitable for cast iron, etc. On products with higher strength. Self-tapping screws are used in a wide range of applications and have a repairing effect on the worn or broken female threads. The repaired threaded holes can continue to use the same size screws. Compared with the advantages of the wire threaded bushing, the self-tapping threaded bushing has self-tapping ability, and the base material does not need to be tapped in advance, which saves cost. The self-tapping screw sleeve is easy and quick to install, requires only one assembly tool, and has low cost and almost no defect rate. Strong resistance to vibration, preventing looseness. There is no clearance with the base metal, and the base material also has good air tightness if it contains bubbles. It has a large contact surface with the finished product and can withstand strong pulling force. The product can be designed with lower strength materials.
Introduction for self-tapping screws
- Oct 18, 2018 -