Mutual Screw & Supply

5/16-18 X 1-1/2" Machine Screws | Oval Head Phillips Drive | 316 Stainless Steel (100 / Pkg.)

5/16-18 X 1-1/2" Machine Screws | Oval Head Phillips Drive | 316 Stainless - Main image
$51.62 $77.04 In stock

316 stainless steel machine screw with superior corrosion resistance, including salt-water and marine environments. Non-magnetic.

Specs

  • Dimensions: 5/16-18 1-1/2"
  • Drive type: Phillips
  • Head style: Oval Head
  • Material: 316 Stainless Steel
  • Thread: 5/16-18 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Oval head profile
  • Phillips drive
  • 316 Stainless Steel 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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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 (5.0 / 5 · 5 reviews)

Brian ★★★★★

The threads bit cleanly and seated flush on my trailer frame without any galling. After a month of road salt and rain, the 316 heads still look brand new with zero rust spots, and the non-magnetic property was a nice bonus for my workbench setup.

Michael ★★★★★

Installed these on a boat ladder that sees constant salt spray, and the 316 stainless is living up to its billing—no rust after three months in the water. The oval head sits flush without snagging lines or skin.

Ryan K. ★★★★★

Used these for a custom dock railing project and they threaded perfectly into pre-tapped holes. The 316 stainless is non-magnetic and feels solid, exactly what you need for coastal exposure.