Promotion of lightweight manufacturing! Aluminum alloy insert nuts for CFRP that prevent galvanic corrosion.
The "Alu-Arma(R) Nut" is a nut made from aluminum alloy. It is treated with a patented special hard anodized coating on the surface, ensuring electrical insulation and effectively preventing the occurrence of galvanic corrosion. When mounted on CFRTP containing 40% carbon fiber and evaluated using the JIS saltwater alternating immersion method, it maintains corrosion resistance for 3,000 hours. 【Features】 ■ High risk countermeasures for galvanic corrosion ■ Synergy for weight reduction ■ Strong fastening retention performance ■ Overall cost reduction ■ Two basic shapes available *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/
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basic information
【Shape】 ■Ver.6: Large lots are processed by forging ■Ver.4: Machining with reduced initial costs even for small lots *For data and material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/
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【Applications】 ■ Bolt fastening without the risk of galvanic corrosion (used embedded in CFRP, CFRTP, magnesium, etc.) ■ Replacement of iron and brass insert nuts for weight reduction ■ Elimination of female threads to serve as counterpart components for tapping bolts, reducing overall costs and preventing loosening ■ Application to collars for CFRP *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Established in 1917, during the dawn of mass production of screws in Japan, the company succeeded in producing the first domestic cross-recessed screws in 1949 and cooperated with the government to localize tapping screws in 1954. The company holds data on over 200,000 types of screws and bolts, enabling the high-quality manufacturing of various shaped products. Recently, it has focused on investing in research and development, working on tapping bolts with a diameter of 6mm or more, high-strength aluminum bolts, tapping screws for thin steel plates, and tapping screws for CFRP, which will support the next generation. The company is committed to innovative technological development without being bogged down by history.