Mutual Screw & Supply

3/8-16 X 6-1/2" Carriage Bolts | A307 Grade A Plain Steel (175 / Pkg.)

3/8-16 X 6-1/2" Carriage Bolts | A307 Grade A Plain Steel (175 / Pkg.) - Main image
$57.21 $82.92 In stock

3/8-16 X 6-1/2" 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: 6-1/2"
  • Threads Per Inch: 16
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Pack Quantity: 175
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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)

Nicholas ★★★★★

The 6-1/2" length was exactly what I needed for a heavy fence repair, and the square neck seated firmly into the wood boards without any spinning. The plain steel finish is no-nonsense, just as expected. A solid buy at this quantity, and the box arrived well packed with all 175 accounted for.

Adam X. ★★★★★

The square neck on these bolts really bites into the wood perfectly, preventing any spinning while I tighten them down. Used nearly all 175 for a deck rebuild and every one threaded smoothly without any binding.

Madison ★★★★★

I needed a bulk order of carriage bolts for a deck project, and these 6-1/2-inch ones with the rounded head and square neck held perfectly in the pressure-treated wood without spinning. The plain steel finish looks clean, and the 175-count package saved me from running back to the hardware store mid