Mutual Screw & Supply

M3-0.5 X 18mm Machine Screws | Flat Head Slotted Drive | 18/8 Stainless Steel (800 / Pkg.)

M3-0.5 X 18mm Machine Screws | Flat Head Slotted Drive | 18/8 Stainless Steel - Main image
$26.57 $36.4 In stock

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

Specs

  • Dimensions: M3-0.5 18mm
  • Drive type: Slotted
  • Head style: Flat Head
  • Material: 18/8 Stainless Steel
  • Thread: M3-0.5 metric coarse

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Flat head profile
  • Slotted drive
  • 18/8 Stainless Steel construction
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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)

Daniel ★★★★★

These screws are the perfect fit for my outdoor project, the flat head sits flush and the 18/8 stainless steel gives me confidence against rust. I’ve used cheaper packs before, but these threads cut cleanly without any stripping.

Steven O. ★★★★★

I needed a solid pack of stainless M3 screws for a marine project, and the 18/8 grade here is perfect—no rust after weeks of salt spray. The package of 800 gives me plenty for future repairs, though the slotted heads require a steady hand with a screwdriver.

Sofia H. ★★★★★

Was surprised by how well these 18/8 stainless steel screws resist corrosion after a month outside in the rain. The flat heads sit perfectly flush in the mounting holes, and the slotted drive gives good control during installation.