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1/4" x 3-1/2" galvanized carriage bolt kit (100 pcs) with washers and nuts

Makers Bolt ★ 3.8/5 · ItemOracle Score Mid-Range

$43 USD
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1/4" x 3-1/2" (100 Pack) Galvanized Carriage Bolt Kit Grade 307A Includes 1/4" USS Flat Washers (100 pcs) and 1/4"-20 Hex Nuts (100 pcs), Hot Dip Galvanized for Exterior Use by Makers Bolt

Galvanized carriage bolt kit includes 100 bolts, 100 washers, and 100 hex nuts. Hot-dip galvanized for exterior use and suitable for ACQ lumber; flat head provides a semi-flush finish. Customer praise cites quality and value

Highlights

  • includes 100 bolts, 100 washers, 100 hex nuts
  • hot-dip galvanized for corrosion resistance
  • meets multiple ASME/ASTM standards (listed in features)

Pros

  • complete hardware kit (bolts, washers, nuts)
  • hot-dip galvanized coating for exterior use
  • flat head for semi-flush finish
  • fits 1/4-20 hex nuts and 1/4" washers
  • positive customer feedback on quality and value

Cons

  • no explicit installation guidance available
  • dimension details limited to listed specs

Best For

  • deck construction
  • gazebos and pergolas
  • heavy-duty outdoor framing
  • exterior wooden structures
  • ACQ lumber projects
  • fence or railing assemblies

Features

  • Quarter-inch diameter carriage bolts with 3-1/2 inch length for versatile framing
  • Includes 100 Grade 307A carriage bolts, 100 USS flat washers, and 100 Grade 2/A hex nuts
  • Hot dip galvanized coating provides enhanced corrosion resistance for exterior use
  • Flat head design yields a semi-flush finish suitable for decks, gazebos, and pergolas
  • Meets or exceeds ASME B18.5, ASTM A307, and ASME B18.2 specifications

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