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3. Surface Preparation Proper preparation of the concrete surface is essential for achieving a strong bond. This may include cleaning the drilled holes and ensuring they are free of dust and debris.

3. Ease of Alignment and Installation The hexagonal head design allows for precise torque application, ensuring that the bolts are installed correctly and securely.

M20 foundation bolts are widely used in numerous applications, including but not limited to

In addition to their size and thread design, drywall screws are also available in different materials and finishes to suit different applications. For example, zinc-plated screws are resistant to corrosion and are suitable for use in damp or humid environments, such as bathrooms or kitchens. Black phosphate-coated screws are often used for interior applications where appearance is not a concern.

These screws are coated with a layer of zinc to protect them from corrosion, which is particularly important in environments where moisture might be a concern. The galvanization process creates a barrier that resists the deterioration of the metal, thereby extending the lifespan of the fastener.