Mutual Screw & Supply

5/16-18 X 1/2" Machine Screws | Round Head Slotted Drive | 18/8 Stainless Steel (200 / Pkg.)

5/16-18 X 1/2" Machine Screws | Round Head Slotted Drive | 18/8 Stainless Steel - Main image
$41.12 $54.82 In stock

18/8 (304) stainless steel machine screw offering strong corrosion resistance for indoor, outdoor, and washdown environments. Non-magnetic.

Specs

  • Dimensions: 5/16-18 1/2"
  • Drive type: Slotted
  • Head style: Round Head
  • Material: 18/8 Stainless Steel
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Round head profile
  • Slotted drive
  • 18/8 Stainless Steel construction
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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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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 (4.8 / 5 · 5 reviews)

Sofia V. ★★★★★

Finally got around to replacing some rusty bolts on my boat trailer, and these stainless screws fit perfectly with no binding. The slotted head takes a standard screwdriver, and they haven't shown a hint of corrosion after a few weeks in saltwater.

Hazel R. ★★★★★

Used a handful of these to secure a hinge on a metal gate that sees rain every week – the 304 stainless hasn't shown a speck of rust yet. Slotted drive worked fine with a standard screwdriver, though a magnetic bit would have saved a little fumbling. For the price, getting 200 pieces of non-magnetic

Daniel ★★★★★

Got my cabinet door screws swapped out in an afternoon, and the 18/8 stainless held up perfectly when I hosed down the workbench afterward. The slotted heads bite nicely with a standard driver, no stripping even at 200 pieces.