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Specifically designed for fastening of steel roof and wall composite panels, these screws have a specially designed high thread section under the head which provides an exceptional clamping force to the outer skin of the system, maintaining the all-important weather seal. Suitable for a maximum build-up of 45mm, which includes insulation, inner and outer skins and the profile depth if crown fixing.
Designed for fastening to timber purlins and rails.
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