Mutual Screw & Supply

5/16-18 X 1-3/4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated Steel (125 / Pkg.)

5/16-18 X 1-3/4" Carriage Bolts | Fully Threaded | A307 Grade A Zinc Plated - Main image
$11.64 $16.4 In stock

5/16-18 X 1-3/4" 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: 5/16-18
  • Length: 1-3/4"
  • Threads Per Inch: 18
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • Thread Style: Fully Threaded
  • Pack Quantity: 125
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Samuel ★★★★★

Finally found carriage bolts with the square neck actually long enough to bite into the wood and stop spinning. The heads sit flush and the zinc coating has held up fine through a few rain showers.

Kevin ★★★★★

The square neck on these bolts really grabbed tight into the wood as I tightened them, so no spinning or slipping. Zinc plating looks clean, and the full threading made it easy to cut one to a custom length. A solid, no-nonsense pack for any hardware shelf.

Lucy ★★★★★

Needed a solid batch for rebuilding a trailer deck, and these have the right thread length to bite into the wood without spinning. The zinc coating looks even and clean, no rust spots out of the bag.