The trilobular thread self tapping locking screw is a special shape screw.It is usually composed of three equilateral triangles. So it is also known as a trilobular thread screw. Compared to traditional screws, triangular screws have below characteristics.  1. Better fixing performance: Because the design of the triangular structure, the fixing performance of trilobular thread screw is better and not easy to loosen.        2. Higher anti-theft performance:Because the unique shape of the trilobular thread screw, its anti-theft performance is also more outstanding, it is not easy to be unscrewed by ordinary screwdrivers. Its excellent locking effect and special performance can eliminate the tedious process of adding nuts for locking. Trilobular thread screws are usually used for equipment with high requirements for fixation. Due to their superior anti-theft performance, they are widely used in various fields, such as home and commercial appliances, automobiles, electrical, air conditioning, machinery, automation, electricity, communication, construction and other sheet metal connectors. Regardless of the connection method, it is all to ensure the strength and stability of the connection. We should choose a suitable shape that meet our requirement to improve connection efficiency and effectiveness.