Hillman 812588 Hot Dipped Galvanized Carriage Bolt， 3/8 x 4-1/2-Inch， Silver， 50-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Carriage Bolts are designed to fasten a wooden face to either wood or metal</li><li>Flat head provides a semi-flush finish to applications</li><li>The heads is designed to eliminate the need for a washer</li><li>Square underside of the head is self locking to eliminate the need for a driving tool</li><li>Galvanized finish is perfect for rust prevention</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31wM0xnBFrL.jpg" noproxy>