Mutual Screw & Supply

1/2-13 X 8-1/2" Carriage Bolts | A307 Grade A Plain Steel (75 / Pkg.)

1/2-13 X 8-1/2" Carriage Bolts | A307 Grade A Plain Steel (75 / Pkg.) - Main image
$57.34 $84.33 In stock

1/2-13 X 8-1/2" 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: 1/2-13
  • Length: 8-1/2"
  • Threads Per Inch: 13
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 75
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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 (4.8 / 5 · 5 reviews)

Joseph B. ★★★★★

The square neck grabbed perfectly into the wood on my deck project, and all 75 bolts had clean threads without any burs. These carriage bolts are exactly as described and a great value for the price.

Brian ★★★★★

Had to use a breaker bar to really seat the square neck, but once it grabbed these bolts hold like crazy—no spinning or loosening on heavy ledger boards.

Abigail ★★★★★

Installed these on a timber-framed gate and the square neck grabbed perfectly into the wood, no spinning at all. A full box of 75 is plenty for bigger projects.