PSW3 is a screw for fixing metal sandwich panels on metal supports with a thickness of no more than 6 mm. The lower thread of 5.5 mm threads on the support material, the upper thread located under the head, threads on the upper sheet of the panel avoiding crushing and acting as a screwing stop. It is supplied with a sealing washer in a diameter of 16 mm. It can be supplied lacquered in any colour of the RAL chart.
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