Mutual Screw & Supply

3/8-16 X 7" Carriage Bolts | A307 Grade A Plain Steel (175 / Pkg.)

3/8-16 X 7" Carriage Bolts | A307 Grade A Plain Steel (175 / Pkg.) - Main image
$68.38 $91.17 In stock

3/8-16 X 7" 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: 3/8-16
  • Length: 7"
  • Threads Per Inch: 16
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 175
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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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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)

Claire ★★★★★

The square neck under the head grabbed the wood the moment I seated them, so no spinning or cursing while I tightened the nuts. The plain steel finish is what I expected for the price, and all 175 came in the box with clean threads.

Emily U. ★★★★★

The 7-inch length was exactly what I needed for my deck railing repair, and the square neck kept them from spinning while I tightened the nuts. I used about 40 of them so far and every one seated without issue.

Madison ★★★★★

The square neck grabbed perfectly into the wood beam I was mounting, so I didn’t need a second wrench to hold it still. These 7-inch bolts gave just the right length for my thick fence post repair.