HILLMAN FASTENER 812588 3/8X4-1/2 Carriage Bolt, 3/8 x 4-1/2-Inch

Carriage Bolts are designed to fasten a wooden face to either wood or metal Flat head provides a semi-flush finish to applications The heads is designed to eliminate the need for a washer Square underside of the head is self locking to eliminate the need for a driving tool Galvanized finish is perfect for rust prevention