Wood Screw

A wood screw is a pointed fastener with a wood-forming thread and a head designed to seat against or into the workpiece. It fastens timber, boards, fittings and general hardware where the screw forms its mating thread in wood. Buyers should specify head and drive, nominal diameter, length, threaded length, point, material, coating, timber type and pilot hole. Safety and load values must come from the selected product standard, approval, drawing or test report; they cannot be inferred from appearance or nominal size. The RFQ should also state quantity, packaging, inspection and traceability requirements.

This directory entry is a neutral reference for procurement. The listed standard DIN 7997 is a catalog designation and serves as a verification reference; it does not certify that any specific product or supplier is compliant. Always confirm model-specific values and standards with the legal manufacturer or supplier before use.

Wood screws are used in joinery, furniture, construction and general hardware applications. The screw's thread cuts or forms into wood fibres, converting installation torque into withdrawal resistance and clamp load. Selection requires specifying the exact geometry, material, finish and installation details. The working principle relies on the helical thread engaging with the wood to provide holding power.

For safe and reliable fastening, the user must verify the screw's performance against the selected timber type and application. Withdrawal and shear data must be obtained from the product standard, approval, drawing or test report. The screw's appearance or nominal size alone does not determine its load capacity. Proper pilot hole size and installation torque are critical to avoid splitting the wood or stripping the thread.

Maintenance signals include corrosion, loosening, or deformation of the screw or surrounding wood. Failure boundaries include over-torquing, incorrect pilot hole, or use in unsuitable timber. Always consult the manufacturer's documentation for specific guidance.

The helical thread cuts or forms into wood fibres and converts installation torque into withdrawal resistance and clamp load. As the screw is driven, the thread displaces wood fibres, creating a mating thread that holds the screw in place. The head seats against or into the workpiece, distributing the clamp load. The screw's withdrawal resistance depends on the thread geometry, material, and the timber's properties. Proper installation requires a pilot hole to prevent splitting and to ensure consistent thread engagement. The screw's performance is verified through testing and standards, not by appearance alone.