Mutual Screw & Supply

5/16-18 X 1/2" Hex Machine Bolts | Steel Zinc Plated | Fully Threaded (1000 / Pkg.)

5/16-18 X 1/2" Hex Machine Bolts | Steel Zinc Plated | Fully Threaded (1000 / - Main image
$24 $37.5 In stock

5/16-18 X 1/2" Hex Machine Bolts in Steel Zinc Plated. A fully threaded hex head machine bolt for use where thread engagement is needed along the entire shank, in metal, wood, and assembled components.

  • Fully threaded for full-length engagement
  • Hex head for wrench-driven, high-torque installation
  • Zinc plating for everyday corrosion resistance

Specifications

  • Type: Hex Machine Bolts
  • Head Style: Hex
  • Material: Steel
  • Finish: Zinc Plated
  • Thread Size: 5/16-18
  • Length: 1/2"
  • Thread: Fully Threaded
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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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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)

Harper ★★★★★

The fully threaded shank is what sold me—makes tightening into stacked metal plates a breeze without worrying about a smooth section hitting the wrong spot. Zinc coating looks even and nothing arrived scratched or bent in the box. For the price per bolt, these are a no-brainer for any hardware stash

Olivia ★★★★★

Bought a thousand of these for a framing job and every single one threaded smoothly into the pre-drilled holes without a single stripped head. The fully threaded shank gave me full engagement in the steel brackets, and the zinc coating held up fine even in damp weather.

Abigail ★★★★★

Wasn’t sure if zinc-plated bolts this small would hold up under repeated tightening, but after driving them through steel brackets and wood frames, I’ve had zero stripping or rusting. The full threading along the entire shank really does make a difference for getting a tight fit every time.