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Daynight Electrical

SKU:F805

CSK M4 × 40mm Machine Screw – Zinc Plated Steel

CSK M4 × 40mm Machine Screw – Zinc Plated Steel

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A M4 × 40mm countersunk (CSK) machine screw, zinc-plated for corrosion resistance and durability in indoor and outdoor applications. The countersunk head sits flush with the work surface, making it ideal for panel assembly, cabinet installation, and general fastening work in electrical and construction projects. Suitable for use with tapped holes or in combination with washers and nuts.

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