Hillman 240084 Carriage Bolt 5/16" X 1-1/2" L Steel, Zinc-Plated 100-PK/Box BRAND NEW AND COMPLETE! THE BOX WAS OPENED AND INSPECTED. Carriage bolts are designed to fasten a wooden face to either a wood or metal frame. Its flat head is designed to eliminate the need for a washer and provide a semi-flush finish to applications. The square underside of the head is self-locking to eliminate spinning and the need for a driving tool. The zinc plating is rust resistant and provides a beautiful, consistent finish, but, may not work for all exterior projects. Finish Zinc-Plated Thread Type Coarse Grade 2 Material Steel Length 0.30 Number in Package 100 pk Packaging Type Boxed Each Weight 3.900 LB Head Diameter - Pitch 5/16" Unit of Measurement SAE Product Type Carriage Bolt Alternative UPC 037504830444 Height 3.86 Width 0.30 Country Origin Code CN