Mutual Screw & Supply

3/8-16 X 7" Carriage Bolts | A307 Grade A Zinc Plated Steel (50 / Pkg.)

3/8-16 X 7" Carriage Bolts | A307 Grade A Zinc Plated Steel (50 / Pkg.) - Main image
$16.31 $26.3 In stock

3/8-16 X 7" 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: 7"
  • Threads Per Inch: 16
  • Material: A307 Grade A Zinc Plated Steel
  • Finish: Zinc Plated
  • 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 (4.6 / 5 · 5 reviews)

Evelyn O. ★★★★★

I needed longer bolts for a deck project and these 7-inchers were exactly what I was after. The square neck grabbed the wood nicely and kept them from spinning as I tightened the nuts.

Grace ★★★★★

The square neck on these bolts locked into the wood perfectly during my pergola build, no spinning at all. Finish is consistent across all 50 pieces, and the zinc coating looks like it'll hold up fine outdoors.

Harper C. ★★★★★

The square neck grabbed the wood instantly, so I didn't need a second wrench to hold the bolt still while tightening. All 50 of them came out of the box with a smooth, consistent zinc finish that looks clean on the pergola frame.