"NS" series internal thread products, because of their special 30° wedge thread geometry, can be used with any standard external thread products to achieve reliable self-locking and anti-loosening performance.
Registered trademark "ns Naishi"
Multiple product certifications
Naishi Industrial Co., Ltd. was established in September 2000. It is the only enterprise drafting unit of the national standard for 30° wedge-shaped anti-loosening thread. The company is headquartered in Shanghai, and has a supporting automatic production base in Changxing, Zhejiang, on the beautiful coast of Taihu Lake. The company We have been committed to increasing the production capacity of the 30° wedge-shaped anti-loosening thread industry chain. Industry 4.0 is our development goal. The company is a private wholly-owned enterprise integrating R&D, production, supply, sales, and joint production and payment, specializing in the production of anti-loose fastening mechanisms.
Regarding the leakage of about 300 tons of highly radioactive nuclear sewage from the Fukushima Daiichi Nuclear Power Plant, Tokyo Electric Power Company recently conducted a dismantling investigation of the leaking above-ground storage tanks. The results of the investigation released on the 20th showed that five bolts were found to be loose at the joint of the tank floor. Tepco said "this is likely to be the cause of the leak" and will conduct a detailed investigation in the future.