STSI is the stock screw made of A2 stainless steel. The stock screw is suitable for fixing sub-structures of photovoltaic systems on pitched roofs with corrugated sheet or cement covering. For this purpose, the stock screw is mounted in the load-bearing steel substructure. The STSI stock screw is supplied pre-assembled with an EPDM seal, clamping nut and nut pair for connection to the MW or SSP consoles. Quick installation, as the roof covering does not need to be removed during installation. Thanks to the EPDM seal, the water-tightness of the roof is maintained.
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