Polymate Type Duro Screw
Thread Forming Screws for Plastics
Description
is a thread-cutting fastener designed to meet the demanding requirements of thermoset plastics with easy assembly coupled with a strong, reliable joint to ensure optimized assembly performance. Provides an asymmetrical 30º thread profile, inclined towards load surface to increase friction (FR) between the application and the fastener Reduction in radial stress Reduction in back-out caused by relaxation Increase in strip resistance Elimination for the need in supplementary locking devices Optimal thread pitch allows for deeper thread engagement Increase in pull-out strength Increase in resistance to vibration loosening Increase in load-carrying capability The recessed thread root allows space for displaced material Minimization in installation torque Miniziation in the risk related to clogging and galling of threads during assembly The shank slot minimizes chip production Through hardened to Rc 33-39
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Similar products from KEBA FASTENINGS
KEBA FASTENINGS
Germany
is engineered for direct assembly of thin walled and flat designed thermoplastic components. Direct assembly using the Polymate30 Screw makes thin walled and flat designs possible. This leads to material savings and reduced cycle times during injection moulding. Therefore, the quality of the Polymate30 joint and the fastening component, translates into a considerable cost saving overall.
KEBA FASTENINGS
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is a special fastener designed for reliability and an easy direct assembly into thermoplastics. Enhancement when compared with Polymate30: The re-designed geometrical flank allows for optimized movement of plastic material while initiating the fastening procedure. Under static and dynamic stress, a considerable increase is ensured in the service life of the joint. At the same nominal diameter, up to 50% gain in torsional and tensile strength. As there is a larger core and reduction in the thread pitch length, shorter fasterners and/or smaller diameters may be used. Improved pitch provides added vibrational safety. SOMETIMES SMALLER IS BETTER The visuals below show the advantages of a reduced fastener length and diameter by comparing Polymate30 to Polymate20. Substitute A provides a reduction in length, whereas Substitute B provides a reduction in diameter. For both scenarios, the reduction in pitch from the Polymate20 provides a maintainted thread flank.
KEBA FASTENINGS
Germany
FEATURES AND BENEFITS Enhancement when compared with Polymate30: • The re-designed geometrical flank allows for the optimized movement of plastic material while initiating the fastening procedure. • Under static and dynamic stress, a considerable increase is ensured in the service life of the joint. • At the same nominal diameter, up to 50% gain in torsional and tensile strength. • As there are a larger core and reduction in the thread pitch length, shorter fasteners and/or smaller diameters may be used. • Improved pitch provides added vibrational safety.