Self-tapping fastener applied to plastic materials or the like

The fastener with a thread profile geometry of varying diameters addresses high torque and material deformation issues, enhancing installation speed and versatility for diverse plastics by incorporating relief zones.

WO2026128993A1PCT designated stage Publication Date: 2026-06-25CIA IND H CARLOS SCHNEIDER
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CIA IND H CARLOS SCHNEIDER
Filing Date
2025-10-07
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Conventional fasteners face issues with high installation torque, material deformation, premature wear, and limited application versatility due to unsuitable thread geometries, particularly when used with plastics, leading to inefficient engagement and reduced mechanical strength.

Method used

A fastener with a novel thread profile geometry featuring thread fillets of varying diameters, designed to reduce installation torque and promote controlled thread formation by incorporating relief zones, suitable for both single- and double-helix configurations.

Benefits of technology

The solution reduces installation effort, increases installation speed, enhances bonding strength, and expands the application range to various plastic densities, ensuring efficient engagement and improved performance.

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Abstract

The present invention relates to a new thread profile geometry for fasteners intended for application in plastic materials or the like, wherein said geometry is provided with one end that comprises thread turns that vary the outer diameter within the same thread pitch. The fastener (1) thus comprises a head (2), a circular shank (3) provided with a set of thread turns (30) configured by means of a forming region (RF) and a support region (RS), wherein the thread turn (30) of the forming region (RF) comprises variations in the outer diameter within the same thread pitch of the fastener (1). The thread turns of the forming region (RF) advantageously generate relief regions, reducing contact with the plastic material, thereby facilitating controlled thread formation, reducing the force required during installation and providing greater fastening strength between the fastener and the substrate.
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