Mutual Screw & Supply

3/8-16 X 7-1/2" Carriage Bolts | A307 Grade A Plain Steel (30 / Pkg.)

3/8-16 X 7-1/2" Carriage Bolts | A307 Grade A Plain Steel (30 / Pkg.) - Main image
$11.47 $16.62 In stock

3/8-16 X 7-1/2" 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: 7-1/2"
  • Threads Per Inch: 16
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 10
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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 (4.8 / 5 · 5 reviews)

Chloe G. ★★★★★

The square neck on these bolts locked right into my wood beam without any spinning, which made assembly much less frustrating than with standard hex bolts. They're a solid choice for any medium-duty framing project where you need a clean, finished look.

Violet N. ★★★★★

I needed some heavy-duty hardware for a deck repair, and these bolts were exactly the right length at 7-1/2 inches. The square neck under the head locked into the wood just like it should, and the plain steel finish looks clean and solid. No stripped heads or wasted bolts out of the 30-pack.

Carter ★★★★★

The square neck grabbed perfectly into the wood, so no wrench was needed to keep the bolt from spinning while I tightened the nut. For plain steel, the finish looks clean and uniform across all 30 pieces.