9-10X2 1/2 Phillips Flat Head w/Nibs Deep Thread Wood Screw 2/3 Threaded Zinc (Pack Qty 2,000) BC-0940DPFND

The deeper thread design offers greater resistance to pull-out forces. The nibs on the bearing surface of the head helps the screw seat flush C1022 case-hardened steel Rockwell C 45 minimim