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Screw Fischer 670487 90 mm
FISCHER 670487 screws are 90 mm long metal wood screws designed for secure fastening in wood and wood-based materials. Each screw has a diameter of 6 mm and a thread length of 54 mm, providing deep bite and strong clamping force for structural and non-structural woodworking tasks. Supplied in packs of 100, these screws suit applications where consistent length and reliable metal construction are required.
These metal wood screws combine a 90 mm overall length with a 54 mm threaded portion to deliver secure connections in solid timber and composite wood panels. The 6 mm diameter adds shear and withdrawal strength compared with smaller screws, while the uniform manufacturing ensures consistent drive and seating. Pack quantity of 100 supports larger projects and reduces interruption for replenishing fasteners.
Select an appropriate pilot hole or pre-drilling size based on timber density and the 6 mm screw diameter to prevent splitting. Use a compatible bit and a controlled-speed power driver or a hand screwdriver to drive the screw until the head is flush with or slightly below the wood surface, taking care not to over-torque. For hardwoods or deep assemblies, consider countersinking the head before final tightening. When installing in exterior or damp environments, apply suitable corrosion protection or use screws with appropriate coating.
For best results, match pilot hole diameter to the screw core for the specific wood species, and use stainless or coated variants if exposure to moisture or outdoor conditions is expected. Store screws in a dry place to avoid corrosion and keep packaging sealed to maintain organization on-site.
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