Mutual Screw & Supply

1/2-13 X 3-1/4" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (50 / Pkg.)

1/2-13 X 3-1/4" Carriage Bolts | Fully Threaded | A307 Grade A Plain Steel (50 - Main image
$14.59 $23.54 In stock

1/2-13 X 3-1/4" 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: 1/2-13
  • Length: 3-1/4"
  • Threads Per Inch: 13
  • Material: A307 Grade A Plain Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 25
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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)

Eva ★★★★★

I needed some sturdy bolts for a deck repair, and these carriage bolts worked perfectly. The smooth rounded head sits flush with the surface, and the square neck kept them from spinning as I tightened the nut.

Kevin ★★★★★

The square neck on these bolts grabbed the wood perfectly when I was building a new picnic table, no spinning at all during tightening. For the price, you get a solid 50-pack of heavy-duty hardware that feels sturdier than what I've picked up at the local hardware store.

Sophia A. ★★★★★

Put these on a heavy-duty gate hinge repair and the square neck grabbed perfectly—no spinning while tightening. The included nuts threaded on smoothly without jamming.