5/16"-18 x 1-3/4" (100 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Washers (100 pcs) and Hex Nuts (100 pcs), Hot Dip Galvanized for

5/16"-18 x 1-3/4" (100 Pack) Galvanized Carriage Bolt Kit Grade 307A, Includes: USS Washers (100 pcs) and Hex Nuts (100 pcs), Hot Dip Galvanized for

Coarse Thread Superior Corrosion Resistance Hot Dipped Galvanized Finish Grade A Full Thread Minimum Tensile Strength: 60,000 PSI Coating Thickness: for sizes 3/8“ & under : 0.0017” (43 microns) | for sizes over 3/8“ : 0.0020” (50 microns) Specifications Met: ASTM F2329/F2329M or ASTM A153/A153M RoHS Compliant Kit Includes Nuts and Washers Carriage bolts are designed to fasten a wooden face to either wood or metal. Push into a hole the same size as the shank and then hammered in the rest of the way, where the square shoulder locks it firmly in place eliminating the need for a washer. Used whenever a smooth finish surface is needed so that nothing becomes snagged on the fastener. Galvanized finish allows for greater corrosion resistance.