# 6-9 X 1 5/8" Phillips Bugle Head Drywall Screw Coarse Thread Black Phosphate/Wax
Standard Garden Variety Drywall Screw works in very soft material.
# 8-11 X 2 1/4" Phillips Flat Head With Nibs under Head Coarse Thread Type 17 Zinc Plated Screws
# 6-9 X 2" Phillips Bugle Head Drywall Screw Coarse Thread Black Phosphate/Wax
# 8-11 X 5/8" Phillips Pan Head Coarse Thread Black Phosphate/Wax Screws
# 6-13 X 1/2" Phillips Flat Undercut Head Coarse Thread Zinc Plated Screws (#5 Head O.D.)