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Thread-forming fastener for thermoplastic materials

10 October 2011

Infastech has introduced a new thread-forming fastener for thermoplastic materials. Aptino (Advanced plastic threadform innovation) is the latest new product from Infastech’s iForm brand, and the steep pitch of its trailing flank is designed to reduce radial thread-forming stress in thermoplastic moulded bosses/nut member applications. The Aptino thread profile enhances resistance to pull-out and vibration loosening forces associated with typical field use.

The thread-form delivers a narrow tip asymmetric profile which efficiently displaces material and therefore requires minimal drive-torque to form an internal thread. The steep trailing flank minimises plastic deformation, resulting in high resistance to internal thread strip out.

The thread root minimises radial stress, resulting in an optimum fastening system for applications where restrictive size and maximum strength is critical. Reduced radial stress enables a reduction of boss wall thicknesses and thermoplastic material usage and further lowers manufacturing cost.

Aptino fasteners can be manufactured in thread sizes from 1.0 to 6.0mm, in a wide range of materials and surface finishes along with various head styles and drive systems.


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