All purpose wood screws are designed for interior applications. The Hillman No. 6 X 1-1/4 in. L Phillips Zinc-Plated Multi-Purpose Screws 100 pk has zinc and yellow dichromate finish that blends with wood for an attractive appearance. These screws are made of alloy steel. They feature right hand thread style, sharp screw point and bugle screw head style. They are not recommended for treated wood.