Prevents screw stripping and free spinning. Accommodates variations in plate thickness and pilot holes! The latest self-tapping screws for thin plates!
"Spirido" is a self-tapping screw for thin steel plates that accommodates variations in pilot hole diameter, driver torque, and plate thickness. This product achieves a wide torque difference due to its low screwing torque and high breaking torque. This torque difference ensures stable fastening even when there are variations in the pilot hole diameter, plate thickness, or when the driver's torque is unstable, contributing to improved productivity for our customers. 【Features】 ■ Achieves low screwing torque and high breaking torque with a newly developed special three-start thread! ■ Sits in place in a short time of about 1.5 turns. 【Benefits】 ■ Accommodates variations in fastening conditions such as plate thickness and pilot hole diameter. ■ Ensures secure fastening even when the driver's torque is unstable. ■ Stabilizes fastening operations in overseas production and automation. ■ Prevents diagonal entry. ■ Reduces screwing time. *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
Example of Thread Profile: M4×6 This is a three-start thread profile, but the height of the thread peaks is high for only one thread peak up to a certain point, which reduces the tightening torque. After that, around the neck area, the heights of all three thread peaks align, allowing for assembly with thin plates at three points, resulting in a shape that achieves a high breaking torque. *For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/
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Applications/Examples of results
■ Self-tapping fastening of thin steel plates ■ Use in sites where managing fastening conditions is difficult ■ Promotion of beading and nutless design *For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/
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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.