Mutual Screw & Supply

5/16-18 X 5" Machine Screws | Truss Head Combination Drive | Steel Zinc Plated (100 / Pkg.)

5/16-18 X 5" Machine Screws | Truss Head Combination Drive | Steel Zinc Plated - Main image
$44.47 $67.38 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 5"
  • Drive type: Combination
  • Head style: Truss Head
  • Material: Steel Zinc Plated
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Truss head profile
  • Combination 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 (4.8 / 5 · 5 reviews)

Evelyn ★★★★★

The truss head sits flat and clean once torqued, which made a difference on my thin steel frame. The combination drive let me switch between a socket and a screwdriver without hunting for the right bit, and all 100 came out of the bag free of any coating defects.

David ★★★★★

Used these for attaching a metal bracket to a wooden frame, and the combination drive let me use either a Phillips or flathead without swapping bits halfway through. The zinc coating seems decently thick for the price, so I’m hoping they’ll hold up in the garage.

Avery H. ★★★★★

Got these for a small outdoor repair project and the zinc coating is holding up well after a couple of rain showers. The combination drive made it easy to use with either a Phillips or flathead bit.