Maintains fastening with axial force just like bolts! Tapping screws for thermoplastic resins with very high fastening strength.
"Delta PT(R)" is a tapping screw designed for resin that maintains fastening through axial force, similar to bolts, allowing for very high fastening strength. It also has good reusability and can be used for component fastening that was impossible with conventional tapping screws. Additionally, it enables downsizing of tapping screws by utilizing high axial force. 【Features】 ■ Thread shape and female thread formation ■ Lead angle and pitch ■ Cross-section of the thread and stress distribution ■ Heat treatment and strength *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
【Recommended Boss Shape】 ■Nominal Diameter (d) ■Boss Outer Diameter (D): d×2 ■Boss Inner Diameter (dh): d×0.8 ■Engagement Length (Pd): Recommended to be d×2 or more ■Counterbore Height (hc): d×0.3 to 0.4 ■Counterbore Inner Diameter (dc): d + 0.2 ■R: d×0.05 to d×0.10 ■Pocket Hole Space Height (hh): Maximum tolerance of length L + α *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
【Application】 ■ For fastening with bolts that require high axial force ■ When repeated fastening is needed, such as for removing housings ■ For automotive parts like inlet manifolds * For data or material requests, please feel free to contact us through the Yamashina website: http://www.yamashina.ne.jp/
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.
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