3/8 x 4 inch carriage bolt kit with ceramic coating

Makers Bolt ★ 3.7/5 · ItemOracle Score Budget

$37 USD
Price subject to change
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3/8" x 4" (25 Pack) Black Carriage Bolt Kit, Grade 307A, Ceramic Coated for Exterior Use, 2X Rust Resistance of Galvanized by Makers Bolt

Carriage bolts kit includes 25 bolts, 25 washers, and 25 hex nuts with a ceramic coating for rust resistance. Durable grade 307A bolts with semi-flush flat heads for decks and outdoor structures. Customer notes solid build and good value; rust resistance receives mixed feedback

Highlights

  • ceramic rust-resistance coating
  • complete hardware kit included
  • flat-head for a semi-flush finish

Pros

  • ceramic-coated for rust resistance
  • includes hardware kit (bolts, washers, nuts)
  • semi-flush flat head for deck applications
  • solid build and good value (customer insight)
  • suitable for outdoor structures like decks, gazebos, pergolas

Cons

  • mixed feedback on rust resistance
  • requires 3/8 inch bolt size compatibility

Best For

  • deck construction
  • gazebo framing
  • pergola assembly
  • outdoor furniture mounting
  • bolting down small structures
  • exterior fastener projects

Features

  • 3/8 inch diameter carriage bolts with 4 inch length
  • Includes 25 carriage bolts, 25 USS washers, 25 hex nuts, and 5-layer ceramic black ruspert coating
  • Ceramic-coated for exterior use with 2x rust resistance over galvanized
  • Head diameter 0.813 inches; nut diameter 3/8 inches; nut wrench size 9/16 inches
  • Flat head provides a semi-flush finish for decks, gazebos, pergolas, and other heavy-duty applications

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