Mutual Screw & Supply

5/16-18 X 4" Machine Screws | Pan Head Phillips Drive | 18/8 Stainless Steel (100 / Pkg.)

5/16-18 X 4" Machine Screws | Pan Head Phillips Drive | 18/8 Stainless Steel - Main image
$47.93 $73.74 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 4"
  • 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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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Ava ★★★★★

Used these to mount a heavy-duty shelf bracket to a stud, and the 4-inch length gave me plenty of bite. The 18/8 stainless held up fine during a humid bathroom install without any spotting.

Jason ★★★★★

The Phillips heads let the driver bite without slipping, even when I’m torquing them into a metal frame. I’m glad I went with the 18/8 stainless for the outdoor deck project, since they’re holding up fine after a few weeks of rain.

William O. ★★★★★

Pulled a handful out of the package and immediately noticed how cleanly the Phillips heads are machined—no stripped slots on the first try. The 18/8 stainless is non-magnetic, which I verified with a magnet, and the 4-inch length fit perfectly for my outdoor hinge assembly. Already ordered a second