Hillman 5/16 in. P X 1 in. L Stainless Steel Carriage Bolt 50 pk

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. Stainless steel finish provides superior rust prevention, terrific for all outdoor applications. *