16 COATED NAILS 30LB16D, COATED NAILS, 30LB. 3 1 4", SMOOTH. Framing nails are used for general construction where a thinner shank for driving ease is desired. They are used in building walls, roofs, applying sheathing, sub flooring, and just about anywhere construction lumber is used. Checkered, flat countersunk head to prevent hammer slippage and provides a flush finish. For construction, carpentry, and framing.