In recent years, the medical community for fracture treatment used in steel plate fixed way, this way is the most important challenge plate fixed way of reliability and durability., after cure bone plates installed to undergo more than millions of times the stress test activities.With the joint efforts of Shanghai no. 6 people's hospital for three years, under 30° variable tooth type locking thread technology was successfully applied to the bone plate on the lock screw.
      30° variable tooth type locking thread technology has gradually entered the includes airplanes, automobiles, trains, railway, shipbuilding, construction, machinery, oil, agricultural machinery, electric power, military industry, medical equipment, and many other fields.This is the space technology successfully applied to the successful paradigm of civilian industry, is a revolution to the traditional thread technology.
      Be used widely in order to facilitate the masses of users, listed above seven application cases, reference for the masses of users. 30° variable tooth type locking thread technology gradually increased the number of users in China and gradually expand the application range, there have been some new application cases. 30° variable tooth type locking thread technology in domestic institutions of higher learning mechanical design disciplines of unified teaching materials.Published by higher education press, wensheng peng, editor in chief of "mechanical design" will be 30° variable tooth type and prestressed spring washer and the nut, metal nut and nylon nut and other four kinds of technologies such as the five locking technology of screw thread connection.