Mutual Screw & Supply

5/16-18 X 5" Carriage Bolts | Fully Threaded | 316 Stainless Steel (50 / Pkg.)

5/16-18 X 5" Carriage Bolts | Fully Threaded | 316 Stainless Steel (50 / Pkg.) - Main image
$36.05 $50.77 In stock

5/16-18 X 5" 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: 5/16-18
  • Length: 5"
  • Threads Per Inch: 18
  • Material: 316 Stainless Steel
  • Finish: Plain
  • Thread Style: Fully Threaded
  • Pack Quantity: 50
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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 (4.8 / 5 · 5 reviews)

Kevin ★★★★★

Used these to bolt a heavy gate frame together outdoors, and the 316 stainless is exactly why I picked them over standard zinc. The fully threaded length gave me plenty of bite through the wood and into the steel bracket, and not a single one stripped during install. They're secure and rust-free so

Riley ★★★★★

The square neck grabbed into the wood immediately on my fence repair, so I didn’t have to wrestle a wrench to keep them from spinning. The 316 stainless finish looks clean and these 5-inchers have plenty of bite for thick posts.

Daniel U. ★★★★★

Used these for a dock repair and the fully threaded shaft made it easy to get the right depth in the wood. The 316 stainless finish is holding up great against the saltwater spray.