Hillman 427490 Carriage Bolt, 5/16 in Thread, Coarse Thread, 2-1/4 in OAL, Medium Carbon Steel, Zinc, 5 Grade
Promo Price:
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. Bolts are grade 5, meaning they've been quenched and tempered to provide a high strength.