Mutual Screw & Supply

1/2-13 X 12" Carriage Bolts | A307 Grade A Zinc Plated Steel (25 / Pkg.)

1/2-13 X 12" Carriage Bolts | A307 Grade A Zinc Plated Steel (25 / Pkg.) - Main image
$26.84 $36.27 In stock

1/2-13 X 12" Carriage Bolts in A307 Grade A Zinc Plated 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 Zinc Plated Steel construction
  • Coarse thread for use in wood and with nuts and washers
  • Sold in bulk packs

Specifications

  • Thread Size: 1/2-13
  • Length: 12"
  • Threads Per Inch: 13
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • Pack Quantity: 25
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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 (4.6 / 5 · 5 reviews)

David ★★★★★

The square neck grabbed tight into the wood as I tightened them, no spinning at all even with a heavy load. These 12-inch bolts held a big timber frame together solidly, and the zinc coating looks like it'll resist rust well.

Grace ★★★★★

The square neck on these bolts gripped perfectly into the wood beams during my deck repair, so they didn't spin at all while I tightened the nuts. The zinc coating seems thick and even, which should hold up well outdoors. I'm glad I got the 12-inch length for my heavier framing connections.

David ★★★★★

Used these to build a heavy-duty garden gate and the 12-inch length gave plenty of bite into the post. The square neck under the head really did grab tight and kept them from spinning as I tightened them.