Simpson Strong-Tie S07225FJW Wood Decking Screw, #7 Thread, Coarse, #1 Drive, Type 17 Point

Durable powder-coated finish painted heads that escape notice in finished work. #1 square drive, 0.230 in Dia, trim head with 'Beaver Bite' type 17 auger point for extra fast starts. Coarse threads approximately 2/3 up shank draw board tightly to substrate. Pre-drilling always recommended and a must near board ends to prevent splits. Slender #7 shank for finish work and trim. Use for decking jobs with stable woods & wood substitutes when screw heads need to be hidden.