# 8-9 X 2 1/2" Phillips Bugle Head Drywall Screw Coarse Thread Black Phosphate/Wax
Standard Garden Variety Drywall Screw works in very soft material.
# 6-13 X 3/4" Phillips Flat Large Head Coarse Thread Nickel Plated Screws (Head Od = .275)
# 8-11 X 1" Phillips Flat Head With Nibs Under Head Coarse Thread Zinc Plated Screws
# 6-13 X 5/8" Phillips Pan Head Coarse Thread Black Phosphate/Wax Screws
# 8-11 X 2" Phillips Flat Head Coarse Thread Black Phosphate/Wax Screws