General description Specifically designed for fixing cement board to timber and thin sheet metal (max. 0.6mm), the TIMCO Twin-Cut Cement Board Countersunk Exterior Silver Screws offer a reliable solution for your construction needs. These screws feature a self-countersinking head that ensures a secure and flush finish, making them ideal for a variety of applications. Technical specifications Dimensions: 4.2 x 32 mm Point type: Twin-cut point Thread type: Hi-low thread Coating: Exterior grade for superior corrosion resistance Other information Designed for use in damp or corrosive environments