Tooth-like nibs under the head allow the screw to countersink itself- Square X head accepts both square drive and Phillips bits.
#8 Flat Head Square Drive Standard Screws 1 1/2 (Bag
Rockler Centerline #8 x 1/2'' Low-Profile Washer Head Screws, Deep Thread, Zinc, 100-Pack
Each of these screws features cutting nibs under the head that help it sink flush with the surface without need for a countersink bit. In addition, their WoodMaster serrated threads offer fast, no-wobble starting and reduced splitting. The low-friction lube finish lets them sink in quickly for a tight hold.
Rockler Centerline #8 x 1-1/2'' Flat Head Square x Self-Countersinking Fluted-Tip Wood Screws, Zinc, 100-Pack
Wood screws are used to attach 2-Pieces of wood together. They feature a pointed tip that helps drive into wood. Pilot holes are sometimes needed to avoid splitting the wood. Features a sharp pointed tip to drive into wood easily Designed to attach 2 pieces of wood together Suitable for hanging items onto a structured wood fixture Size: #8 x 2 in.
Prime-Line #8 x 2 in. Zinc Plated Steel Square Drive Flat Head Wood Screws (25-Pack) 9202119
Prime-Line #8 x 2 in. Zinc Plated Steel Square Drive Flat Head
Rockler Centerline #8 x 1/2'' Low-Profile Washer Head Screws, Deep Thread, Black, 100-Pack
8-2C500 Woodworking Plans - Projects 1-200
Peachtree Woodworking Catalog Pages 51-100 - Flip PDF Download
8 x 2-1/2'' Flat Head Square X Self-Countersinking Fluted-Tip Wood