Mutual Screw & Supply

5/16-18 X 1/2" Machine Screws | Oval Head Phillips Drive | Steel Zinc Plated (300 / Pkg.)

5/16-18 X 1/2" Machine Screws | Oval Head Phillips Drive | Steel Zinc Plated - Main image
$32.21 $46.02 In stock

Zinc-plated steel machine screw for general-purpose fastening. The zinc coating adds corrosion resistance for indoor and light outdoor use.

Specs

  • Dimensions: 5/16-18 1/2"
  • Drive type: Phillips
  • Head style: Oval Head
  • Material: Steel Zinc Plated
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Oval head profile
  • Phillips drive
  • Steel Zinc Plated construction
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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 (4.6 / 5 · 5 reviews)

Ellie ★★★★★

Threaded smoothly into my pre-tapped holes without binding, and the oval head sits flush enough for the cabinet hinges I'm mounting. The zinc coating looks consistent and should hold up fine in my garage workshop.

Emma C. ★★★★★

The Phillips heads on these 5/16-18 screws bit securely into my driver without any cam-out, which I've had trouble with on cheaper fasteners. They're a solid choice for assembling indoor shelving where I need a precise fit in tight spots.

Victoria Z. ★★★★★

Zinc plating held up fine when I used these to mount brackets in a slightly damp garage, no rust after a few weeks. The Phillips heads seated well in my driver without stripping, even on a couple I had to back out and re-tighten. For three hundred pieces at this price, these are a solid everyday fas