Mutual Screw & Supply

5/16-18 X 10" Carriage Bolts | A307 Grade A Plain Steel (100 / Pkg.)

5/16-18 X 10" Carriage Bolts | A307 Grade A Plain Steel (100 / Pkg.) - Main image
$41.98 $59.12 In stock

5/16-18 X 10" Carriage Bolts in A307 Grade A Plain Steel. Carriage bolts feature a smooth, rounded head with a square neck underneath that pulls into the material to prevent the bolt from turning during installation, making them ideal for wood-to-wood and wood-to-metal connections.

  • Domed head with square anti-rotation neck
  • A307 Grade A Plain Steel construction
  • Coarse thread for use in wood and with nuts and washers
  • Sold in bulk packs

Specifications

  • Thread Size: 5/16-18
  • Length: 10"
  • Threads Per Inch: 18
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 100
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Emily ★★★★★

Installed a dozen of these in a heavy wooden gate and the rounded heads gave it a clean, finished look. The square neck really locked them in tight without needing a wrench.

James S. ★★★★★

The square neck grabbed the wood perfectly on my deck rebuild, no spinning while I tightened it. These 10-inch lengths saved me from having to buy longer and cut them down.

Thomas ★★★★★

Pulled a full 10" length through two stacked 2x4s without the square neck stripping once, and every bolt in the pack came out with clean threads. The plain steel finish is exactly what I needed for a rustic fence look that'll age naturally.