5/16" x 1" (50 Pack) Galvanized Carriage Bolt Kit Grade 307A Includes 5/16" USS Flat Washers (50 pcs) and 5/16"-18 Hex Nuts (50 pcs), Hot Dip Galvanized for Exterior Use by Makers Bolt
Special Features
Diameter: 5/16" | Length: 3-1/2" | Head diameter: 0.703" | Nut diameter: 5/16"-18 | Nut wrench size: 1/2" | Washer outside diameter: 7/8"
Kit includes 50 Grade 307A carriage bolts, 50 USS thick washers, 50 Grade 2/A hex nuts
Hot dip galvanized coating for superior corrosion resistance, Suitable for use in ACQ treaded lumber
The flat head provides a semi-flush finish and is perfect for decks, gazebos, pergolas, and other heavy duty applications
Meets or Exceeds: ASME B18.5, ASTM A307, ASME B18.2.2, ASTM A563, ASME B18.21.1, ASTM F2329
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