Mutual Screw & Supply

1/2-13 X 15" Carriage Bolts | A307 Grade A Plain Steel (50 / Pkg.)

1/2-13 X 15" Carriage Bolts | A307 Grade A Plain Steel (50 / Pkg.) - Main image
$70.06 $101.54 In stock

1/2-13 X 15" 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: 15"
  • Threads Per Inch: 13
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 50
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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 (4.4 / 5 · 5 reviews)

Lucy ★★★★★

I needed these for a heavy timber gate and the square neck really dug in to stop them from spinning while I tightened the nut. The plain steel finish will rust, but that's fine for my outdoor project.

Elizabeth M. ★★★★★

The 15-inch length is exactly what I needed for a heavy timber frame project, and the smooth rounded heads sit flush without snagging anything. Every one of the 50 bolts came out of the box straight and clean, no bent threads or rough edges to fight with.

John ★★★★★

Installed a dozen of these in a new deck railing and the square neck really did grip tight—no spinning while I tightened the nut. The 15-inch length was just right for sandwiching a 4x4 post. Solid, no-frills hardware that did exactly what I needed.