This is a nut with high resistance to seizing and galling, featuring a dry finish with glossy tin plating.
The baked-on nuts have high adhesion, making it difficult for the plating to peel off, allowing for repeated use. Additionally, the smooth tin plating finish reduces the friction coefficient of the screw surface and seating surface, increasing axial force, while the friction coefficient is not too low, thereby reducing the risk of over-torque compared to anti-seize agents. 【Features】 ■ High anti-seizing and galling prevention effect: By applying a three-layer plating, not only is the anti-seizing effect achieved, but also improvements in aesthetics and adhesion strength. ■ Reusable: Unlike coating agents, the high adhesion of the plating makes it difficult to peel off, and even after repeating tightening tests eight times, the anti-seizing effect remains. ■ Clean: With a dry finish, there is no leakage like when using lubricants, preventing dirt. Furthermore, since no application time is required, work time can be reduced. ■ Cost reduction: Time spent on replacing seized nuts can be reduced, leading to a wide range of cost savings, including labor costs, tool strain, and the risk of injuries related to the work.
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basic information
■ Product specifications: JIS B1181 (Appendix) Hexagonal nut Type 1 ■ Material: SUS 304 (Equivalent material) ■ Guaranteed load: 1,000 N/mm² ■ Surface treatment: Glossy tin plating ■ Sizes: M4, M5, M6, M8, M10, M12, M16, M20, M24, M30
Price information
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Applications/Examples of results
【Application】 It is suitable for applications where seizure and galling resistance is required.
Detailed information
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The baked nut has a three-layer plating structure. ■ Tin layer (functional decorative material layer) - Tin layer of 5-10 µm - Prevents the heat absorbed by the copper layer from being retained on the surfaces that rub against each other (threads) during bolt and nut fastening, and reduces friction on the rubbing surfaces. - Maintains aesthetic appeal (dry finish). ■ Copper layer (functional material layer) - Copper layer of 4-12 µm - Made of copper with good thermal conductivity, it absorbs and dissipates heat generated by friction during fastening. ■ Nickel layer (primary material layer) - Nickel layer of 0.2-1 µm - Activates the surface oxide layer of stainless steel screw components, improving adhesion to the base material and copper layer.
Company information
Tobimoto Sangyo Co., Ltd. was established as a specialized trading company for screws and fastening parts in Tanimachi, Osaka City, shortly after World War II, where many 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 parts are used in various industries as the unsung heroes behind the scenes. They may not be very noticeable, but they are essential products without which assembly cannot take place. We take great joy and pride in having specialized in these screws and fastening parts for many years. Our ability to continue our business activities over the years 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 our 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.
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