Mutual Screw & Supply

5/16-18 X 3/8" Machine Screws | Pan Head Phillips Drive | 18/8 Stainless Steel (300 / Pkg.)

5/16-18 X 3/8" Machine Screws | Pan Head Phillips Drive | 18/8 Stainless Steel - Main image
$31.38 $46.83 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 3/8"
  • Drive type: Phillips
  • Head style: Pan Head
  • Material: 18/8 Stainless Steel
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Pan head profile
  • Phillips 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)

Timothy ★★★★★

Holding one of these screws, you can immediately feel the quality—the pan head and crisp Phillips slot look precision-machined. I used them for a small outdoor project and the 18/8 stainless steel feels like it will easily outlast the assembly. Definitely a solid choice for metal-to-metal fastening.

Brian T. ★★★★★

These are perfect for replacing cabinet hinge screws—the pan head sits flush and the 18/8 stainless steel won’t rust in a damp kitchen. I used them on a few outdoor gate latches too, and the coarse 5/16-18 thread grabbed nicely in the metal.

Edward N. ★★★★★

Had to replace some corroded hardware on a boat trailer, and these 5/16-18 screws are perfect—the 18/8 stainless steel is non-magnetic and handled the saltwater fine. The Phillips drive seated cleanly without stripping.