Mutual Screw & Supply

1/4-20 X 3" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / Pkg.)

1/4-20 X 3" Carriage Bolts | Fully Threaded | 316 Stainless Steel (100 / Pkg.) - Main image
$22.81 $31.24 In stock

1/4-20 X 3" 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: 3"
  • 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)

Violet R. ★★★★★

The square neck grabbed the wood perfectly on my first try, no spinning or cursing. These 316 stainless bolts are fully threaded, so I cut them down easily for a custom-length fit. Definitely the last set of carriage bolts I'll need to buy.

Emily Z. ★★★★★

Was replacing the rusted hardware on a dock ladder and these 316 stainless bolts fit perfectly. The fully threaded shaft made installation a breeze, and the square neck held tight without spinning.

Victoria G. ★★★★★

Installed these on a new wooden gate and the square neck gripped perfectly, no spinning while tightening. The 316 stainless feels solid and should handle the weather without rusting.