This is a new high-strength fastening solution developed through collaboration with top manufacturers boasting advanced technology in Japan.
By adopting high-strength bolt steel with excellent "delayed fracture resistance characteristics," we achieve a tensile strength of 1,400 N/mm² while realizing an elongation of over 9%. Furthermore, the use of aerospace-grade "MJ screws" results in a shallower valley at the screw section and a larger valley radius compared to standard specifications, which enhances fatigue resistance by alleviating the notch effect.
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basic information
■ Material : KNDS4 ■ Strength : Class 14.9 ■ Tensile Strength : 1,400N/mm² ■ Yield Strength : 1,260N/mm² ■ Guaranteed Load Capacity : 1,120N/mm² ■ Elongation : 9% min ■ Hardness : HRC 44–50 ■ Dimensional Standard : JIS B 1176 (excluding neck radius R) ■ Thread Standard : ISO5855-1 MJ thread (for aerospace use) ■ Thread Accuracy : 4g 6g based on ISO5855-1 ■ Surface Treatment : Black oxide coating / Delta Protect
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Company information
Tobimoto Sangyo Co., Ltd. was established as a specialized trading company for screws and fastening components in Tanimachi, Osaka City, shortly after the war, where shops dealing in machinery and tools lined the streets. Today, we have built over 75 years of history in the Osaka Machinery Wholesale District (commonly known as the Machinery District) located in Higashi-Osaka City, a town of small and medium-sized enterprises. Screws and fastening components are used in various industries as the unsung heroes behind the scenes. They may not stand out, but they are crucial products without which assembly cannot take place. We take great joy and pride in having specialized in these screws and fastening components for many years. Our ability to continue our business activities over the long term is thanks to our customers and all the stakeholders who support us. We wish to maintain this sense of gratitude and continue to build trust with our customers in the future. With the mission of "providing the best solutions for all customers," we will continue to work together as a team to contribute, albeit modestly, to the development of our customers and society. We kindly ask for your continued support.