Features; • Coarse Thread Specialist Screw. • Head: Countersunk Phillips Drive Bugle. • Finish: Black Phosphate. • Specialist Screws for drywall applications. • Used for fitting plasterboard, fibreboard and other types of insulation boards to wood or steel studding. • Phillips drive head. • Screws are made from fully hardened C1022 steel. • Extra deep insert bit recess offering a firmer positive drive. • Extremely sharp piercing point. • Thread gives speedy insertion and improved holding power. • Bugle head allows the screw to sink effortlessly into the dry lining without the need for countersinking. • Bugle head minimises damage to the surface enabling a smoother surface finish. • Predominantly used when fitting plasterboard to timber stud work.