Mutual Screw & Supply

3/8-16 X 12" Carriage Bolts | A307 Grade A Zinc Plated Steel (20 / Pkg.)

3/8-16 X 12" Carriage Bolts | A307 Grade A Zinc Plated Steel (20 / Pkg.) - Main image
$10.68 $16.68 In stock

3/8-16 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: 3/8-16
  • Length: 12"
  • Threads Per Inch: 16
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • Pack Quantity: 10
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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)

James ★★★★★

The square neck under the head really grabbed into the wood as I tightened them, so no spinning or extra wrench holding needed. The zinc plating looks clean and even across all twenty bolts, and the threads were smooth right out of the package.

Henry ★★★★★

I needed twelve-inch bolts for a wooden beam repair and the square neck under the head grabbed the wood perfectly, so I didn't need a wrench on the other side. The zinc coating looks clean and none of them arrived bent or stripped. Exactly what I was hoping for.

Carter U. ★★★★★

These are holding up a heavy garden gate I built, and the 12-inch length gave me plenty of bite into the pressure-treated frame. The zinc coating looks clean and even, and the square neck really does keep them from spinning while you tighten the nut.