Art.-No. 71204

fischer double-threaded screw STSR M12 x 300 mm A2 stainless steel A2

Top Features

Lower thread for wood
Upper metric thread
Incorporated EPDM gasket
Made of A2 stainless steel

Double-threaded screw for fixing photovoltaic systems on corrugated panel or faux-barrel tile roofs to a load-bearing structure in wood, concrete or brick and cement.

Advantages

The STSR double-threaded screw is supplied pre-assembled with EPDM gasket, tightening nut and pair of nuts for connection to the MW or SSP brackets.
Quick installation because the roofing must not be removed during installation.
Due to the EPDM gasket, the waterproofness of the roof is maintained.

STSR is the double-threaded screw in A2 stainless steel for fixing subframes of photovoltaic systems on corrugated panel or faux-barrel tile roofs with wooden load-bearing structure. Also suitable for installation on concrete with chemical injection mortar or in brick and cement structure with chemical injection mortar and FIS HK or FIS HN injection anchor sleeves.
Incorporated EPDM gasket for sealing against rain infiltration.

Properties

Concrete beams and slabs
Brick and concrete ceilings
Wooden beams

Applications

Suitable for corrugated panel roof systems with:

SolarLight rail
SolarFish rail

Fixing of STSR double-threaded screw:

With FIS V chemical anchor on concrete beams and slabs
With FIS V chemical injection mortar and FIS HK injection anchor sleeve in brick and concrete ceilings
Directly on wooden beams after drilling the pilot hole

Building materials

Concrete beams and slabs
Brick and concrete ceilings
Wooden beams

You can find detailed information on building materials in the registration document.

Approvals

TUV - R 60154136

Functionality

Identify the length of the STSR double-threaded screw depending on the thickness of the load-bearing structure.
Determine the centre distance of the STSR double-threaded screws according to the snow and wind loads of the installation area and inclination of the roof.
Identify the position of the STSR double-threaded screws depending on the load-bearing structure and the layout of the installation.
Drill the support according to the diameter of the screw and the type of support.
Fix the STSR double-threaded screw to the structure by putting the EPDM rubber in contact with the roof.
Tighten the MU nut on the gasket to maintain waterproofness.
FIx the SSP or MW connection plate, adjusting its height using the MU F nuts.
Carefully seal the exit point of the screw from the roof with bituminous sealant.

Mounting Strip 1 Picture

1 / 10

Mounting Strip 2 Picture

1 / 8

Mounting Strip 3 Picture

1 / 6

Accessories

Diameter ( d )	11 mm
Shaft length ( L )	35 mm
Wood thread length ( l₁ )	100 mm
Metric thread length	150 mm
Amount	25 pcs.
GTIN (EAN-Code)	8001132712047

fischer double-threaded screw STSR M12 x 300 mm A2 stainless steel A2

The advantages / Product description

Application and approval

Assembly instruction

Technical data

Documents for download