Hard-to-Find Fastener No. 4 Phillips Head Flat Twin Fast Wood Screws, 0.5 Inch, 100-Piece Diameter: #4 Length: 1/2 inch Material: Steel Finish: Black Phosphate Head Style: Flat (Phillips) Diameter: #4 Length: 1/2 inch Material: Steel Finish: Black Phosphate Head Style: Flat (Phillips)