Mutual Screw & Supply

3/8-16 X 2-1/2" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (450 / Pkg.)

3/8-16 X 2-1/2" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (450 - Main image
$57.71 $93.08 In stock

3/8-16 X 2-1/2" 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
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 3/8-16
  • Length: 2-1/2"
  • Threads Per Inch: 16
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 450
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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)

Elizabeth I. ★★★★★

I needed a big batch for a deck project, and these fully threaded carriage bolts made installation a breeze since the square neck locks into the wood perfectly.

Aurora Z. ★★★★★

These bolts look great and the square neck grabbed the wood firmly as I tightened them, no spinning at all. The plain steel finish is exactly what I needed for this indoor project, and 450 per package is more than enough.

Andrew D. ★★★★★

Finally a pack of carriage bolts that actually has the square neck under the head, which made installation on my deck railing much easier since the bolt didn't spin while I tightened the nut. The fully threaded length was exactly what I needed for a clean, secure fit through the 2x4s.