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Screw Fischer 670674 120 mm
Fischer 670674 120 mm screws are durable metal fasteners designed specifically for use in wood materials. Each screw is 120 mm long with a thread length of 70 mm and a 5 mm diameter, supplied in a pack of 50 to cover medium and large woodworking and construction projects. The screw geometry and material selection aim to provide reliable holding power and long-term joint stability in timber applications.
The screws feature a long shank and extended thread length that enable deep engagement with wooden substrates, improving pull-out resistance and load distribution. Their 5 mm diameter balances shear strength with minimal splitting risk for pre-drilled or adequately prepared holes. Supplied in a 50-piece pack, they reduce the need for frequent reorders and are suitable for repeated professional or DIY use.
Select an appropriate pilot hole diameter and depth based on wood type and screw diameter to reduce splitting and ensure correct bite. For hardwoods, drill a pilot hole to the full threaded length; for softwoods, a slightly smaller pilot hole may be sufficient. Drive the screw with a compatible screwdriver or power driver using the correct bit to avoid cam-out and head damage. For outdoor or treated timber use, apply suitable corrosion protection or select screws with appropriate coating before installation.
Pre-drill pilot holes for hardwoods and dense engineered woods. Use washers where increased bearing area is required and follow local building codes for structural applications. Store screws in a dry place to prevent surface corrosion prior to use.
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