Osaka Forming specializes in the complex machining of stainless steel nuts and other components. Their "E-LOCK" series of nuts, designed for use in motorcycles and highways where vibrations are high and screw loosening is a critical concern, incorporates a special leaf spring at the top of the nut to prevent loosening.
The special leaf spring consists of three blades, and additional blades are shaped to match the lead angle of the screw. A utility model patent has also been obtained. The "E-LOCK Square Welded Nut Type M4-M10" also won the Machine Parts Award at the "2012 Super Manufacturing Parts Awards".
Spank nuts are blind fasteners that combine the advantages of nuts and rivets, allowing for easy installation from one side on thin sheets, pipes, and plastic sheets where tapping is difficult or welding is not possible.
These diverse products are created using the experience and development capabilities cultivated over many years.

The company handles almost the entire production process, from nut development and design to material procurement, cold forging, threading, and assembly pressing, with the exception of some heat treatment and surface treatment. In particular, its network with domestic and international companies allows for flexible material procurement. Its expertise in the production of complex shapes, such as stainless steel, has earned it a strong reputation among other manufacturers, including supplying screws as OEM products.
Furthermore, they have achieved quality improvements by, for example, manufacturing in-house shock vibration testing machines, which are essential for loosening tests.

The company established the M Project Division in 1993 and quickly promoted computer-based networking and centralized information management. For example, "MyHelper" is a system for understanding the current situation on the factory floor. It has enabled the centralization of cost management, production, tooling, and quality control.
Furthermore, the "Kenta" test result creation software improves testing efficiency by allowing users to easily retrieve desired data, such as test result reports, histograms, and past measurement history.
We design, develop, and utilize systems in-house to support the efficiency and management of these sites, and we also handle sales and maintenance.

"The DNA that forms the basis of life and the galaxies in the universe are composed of spirals. Since screws also have a spiral shape, it sparks a deeper curiosity about their intricacies," says President Okuno. As a screw manufacturer, he is passionate about developing screws that can be proven to have a 0-degree loosening angle in vibration tests, aiming to create even safer products.

Our company history

Founded in 1971, we began mass production of screws using both cold and hot forming processes for aluminum, stainless steel, and other materials. We shifted from producing general nuts to special nuts and were among the first to handle the shaping and processing of stainless steel.
We are constantly striving to enhance our value as a manufacturer by developing our own brands through ingenuity and innovation. Our top priority is delivering safety and peace of mind to the workplace, and we are committed to a path of coexistence and mutual prosperity with our competitors.

Wisdom over knowledge. We approach challenges with a hungry spirit to turn ideas and technical skills into reality.

Manufacturing and sales of locking nuts, blind nuts, etc., development, manufacturing and sales of special cold-forged products, development and sales of computer systems specialized for screw factories, etc.

Automotive parts manufacturers, building hardware manufacturers, railway rolling stock manufacturers, hardware wholesalers, etc.