Hillman Fasteners™ 461391 Bright Box Nails, 3.5" x 16D, 5 LbHillman Box Nails are used for framing, carpentry, boxes and general construction applications. They have a flat head which sits flush on the surface when driven into wood, and are usually a lighter gauge than common nails. These box nails come in a bright finish. Size: 16D Length: 3. 5" Finish: Bright Flat head Made of steel Installs with a hammer used for framing and general construction applications 5 lbs package.