Parafuso Fischer 670137 40 mm 1000 unid.

Fischer 670137 screws are 40 mm metal wood screws supplied in a pack of 1000 pieces. Each screw has a diameter of 3.5 mm and a thread length of 28 mm, designed to provide dependable fastening in timber and wood-based materials. The screws are intended for general wood construction and assembly tasks where a combination of sufficient grip and corrosion-resistant metal construction is required.

Advantages

These metal wood screws combine a compact 40 mm length with a 3.5 mm diameter to balance strength and ease of driving. The 28 mm threaded portion ensures secure engagement with wood fibers, reducing the risk of loosening under normal load. Supplied in a bulk pack of 1000, these screws offer cost-effective continuity for larger projects and routine maintenance tasks.

Suitable for

• Fixing wooden panels, battens and trim
• General carpentry and joinery work
• Furniture assembly and repair
• Interior wood fittings and fastening

Key specifications

• Length: 40 mm
• Diameter: 3.5 mm
• Thread length: 28 mm
• Material: metal
• Pack quantity: 1000 pieces
• Intended substrate: wood and wood-based materials

How to use

Pre-drill pilot holes as required by the wood type and screw diameter to reduce splitting, especially near edges or in hardwoods. Position the screw perpendicular to the workpiece and drive it in using a compatible screwdriver or power driver set to an appropriate torque to avoid overdriving. For visible surfaces, countersink the head if a flush finish is required and use appropriate plugs or fillers for aesthetic finishing.

Recommendations

For best results, match pilot hole diameter to the core diameter of the screw and select a driving speed and torque suitable for the wood species. When used outdoors or in high-humidity environments, verify the metal finish or corrosion resistance is suitable for the exposure conditions; apply additional protective treatment if necessary.