Dottie DDFW634 - #6 x 3/4" Square Drive Flat Head Wood Screw is made of carbon steel with zinc plating. Designed for plywood, lumber, and other woods, it features aggressive threads for high grip strength. The flat head ensures a flush surface. With a sleeve quantity of 500, this wood screw has a thread pitch of 18 threads per inch and a head diameter ranging from 0.279" to 0.244". It has a gimlet point type and a driver size of #2.