Fantastic Prices On Screws For Your DIY Framing Project. Common Sizes of Picture Framing Screws Include #6 and #4 Pan Head, and We Carry Both Types of Screws. Be Careful Not To Screw In Hanging Hardware That Is Too Deep For Your Wood Frame. The 3/8" Screws on This Supplies Page Are Good For Small DIY Picture Frames. The 1/2" Pan Head Screws Are Best for Large Frames. Web Picture Frames is Your Source For DIY Supplies and Framing Projects like Screws and Strap Hangers.