3.5mm x 42mm Bugle Head Phillips Black Drywall Screws - QTY 1000 Specialist Screws for drywall applications Used for fitting plasterboard, fibreboard and other types of insulation boards to wood or steel studding 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 Head: Countersunk Phillips Drive Bugle Finish: Black Phosphate Thread Size - Metric: 3.5mmScrew Length: 42mmFastener Plating: Black PhosphateFastener Material: SteelScrew Head Style: Bugle Head PhillipsProduct Range: Forgefix - Black Drywall Screws