Mutual Screw & Supply

1/2-13 X 4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated Steel (50 / Pkg.)

1/2-13 X 4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated Steel - Main image
$16.19 $22.8 In stock

1/2-13 X 4" 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
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 1/2-13
  • Length: 4"
  • Threads Per Inch: 13
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • Thread Style: Fully Threaded
  • Pack Quantity: 25
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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)

Steven ★★★★★

The zinc plating looks clean and even across all 50 bolts, and the square neck seated perfectly into the wood on my first try. They drove in straight with no stripping, which saved me a headache on a deck project.

Ryan ★★★★★

The square neck on these bolts grabbed into my wood like a champ, no spinning at all while I tightened the nut. The zinc coating looks clean and consistent across all 50 pieces.

Adam ★★★★★

Needed a dozen carriage bolts for a heavy-duty utility trailer build, and the zinc plating on these looks clean and consistent across all fifty. The square neck grabbed the wood perfectly on the first try, no spinning or frustration. Exactly the strength I needed for the frame.