#10 x 3-1/2" Zinc Plated Steel Square Drive Flat Head Wood Screws

Diameter: #10
Length: 3-1/2"
Material: Steel
Finish: Zinc
Head Style: Flat (Square)
Point Type: Sharp
Drill Size: 3/32" Hole
Thread Length: Partial
Type: Wood Screw

Box of 18.

A wood screw generally has an unthreaded shank below the head. It is designed to attach two pieces of wood together.