Mutual Screw & Supply

1/4-20 X 4" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (525 / Pkg.)

1/4-20 X 4" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (525 / - Main image
$50.82 $68.68 In stock

1/4-20 X 4" 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
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 1/4-20
  • Length: 4"
  • Threads Per Inch: 20
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 525
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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)

Benjamin ★★★★★

I bought a full box for a deck repair and appreciate how the fully threaded shank allowed me to cut them to exact lengths without losing grip. The square neck seated firmly into the wood, making installation straightforward with just a wrench.

Penelope ★★★★★

The square neck on these bolts really dug into the wood and kept everything from spinning as I tightened them down. Finished my deck project with no stripped heads or wasted hardware.

Elizabeth J. ★★★★★

The 4-inch length was exactly right for sandwiching two 2x4s together, and even with 525 in the box, every single one came out of the package straight and clean. The fully threaded design made driving them flush a breeze, and the plain steel finish is rough and ready for a coat of paint or a bit of