Mutual Screw & Supply

1/4-20 X 2-1/2" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / Pkg.)

1/4-20 X 2-1/2" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / - Main image
$18.04 $26.15 In stock

1/4-20 X 2-1/2" Carriage Bolts in 316 Stainless 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
  • 316 Stainless Steel construction
  • Coarse thread for use in wood and with nuts and washers
  • Fully Threaded
  • Sold in bulk packs

Specifications

  • Thread Size: 1/4-20
  • Length: 2-1/2"
  • Threads Per Inch: 20
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 100
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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)

Sofia ★★★★★

The square neck grabbed the wood perfectly on my deck rebuild — no spinning, even with a wrench on the nut. 316 stainless feels heavy-duty and the full threading made alignment a breeze. These are exactly what I needed for outdoor framing.

Charlotte M. ★★★★★

I used these for a dock repair in saltwater, and the 316 stainless steel is holding up perfectly with zero rust so far. The fully threaded design made securing the planks much easier than half-threaded bolts I've used before.

Violet T. ★★★★★

The square neck grabbed the wood instantly on my first test fit — no spinning, no frustration. These 316 bolts feel solid and the threads are clean enough to spin on a nut by hand.