Mutual Screw & Supply

1/4-20 X 3/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (200 / Pkg.)

1/4-20 X 3/4" Carriage Bolts | Fully Threaded | 316 Stainless Steel (200 / Pkg.) - Main image
$16.35 $25.96 In stock

1/4-20 X 3/4" 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: 3/4"
  • Threads Per Inch: 20
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 100
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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)

Ruby Q. ★★★★★

Used these to rebuild a section of my boat trailer and the square neck grabbed perfectly into the wood, no spinning at all. The fully threaded 316 stainless is exactly what I needed for saltwater exposure.

Richard L. ★★★★★

Installed these on a new dock project and the square neck grabbed the wood perfectly—no spinning while tightening. The 316 stainless is definitely a step up from standard hardware for coastal use.

Robert J. ★★★★★

I’ve been rebuilding a wooden deck swing, and these fully threaded 316 bolts held fast even after a full week of rain. The square neck seated perfectly into the pre-drilled holes, so I didn’t need a second wrench to keep them from spinning. At 200 per package, I’ve got plenty left for future project