Sheh Fung, based in Kaohsiung, Taiwan, has introduced two new patented screws – a composite deck screw with twin cut and a cement board screw with pineapple knurl.
Sheh Fung Screws Co Ltd points out that often for outdoor balconies or floors around swimming pools, different colours of waterproof, high temperature and compression resistant composite decks – made of recycled wood dust and plastics – are used. However, the surface of such decks is prone to mushroom defect when they are fastened together with the base layer of ACQ lumbers.
The Sheh Fung R&D team therefore decided to conduct in-depth research on the performance of products and adopted a six lobes design on its new composite deck screw in order to achieve better cam out avoidance. Special oval threads have also been added to help cut the composite deck boards during fastening and the twin cut design can quickly cut off and remove wood dust, similar to pre-drilled hole that can countersink screws into the composite deck boards. In addition, in order to maximise the efficacy of the composite deck screws, they are available in different materials based on where they’ll be applied.
Roger Su, R&D and manufacturing assistant manager at Sheh Fung, comments: “This Taiwan patented product is also painted with ACQ resistant Kaitex® coating and has been ICC certified, which offers customers stability and durability.”
In the application environment of cement boards, using general screws may lead to poor engagement or unpleasing protruded cement boards owing to poor dust removal. Sheh Fung’s patented cement board screws with pineapple knurls, made of 1022 carbon steel and coated with highly corrosion resistant eCoating or Kaitex®, can assemble cement boards with wood or steel structures vertically and special pineapple knurls can cut cement boards into powder to achieve a complete countersunk fastening result.
“After cement boards are painted, the cement board screws become invisible,” points out Roger Su. “This product has been patented in Taiwan and the USA.”
Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.
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