Mutual Screw & Supply

5/16-18 X 1-3/8" Machine Screws | Flat Head Phillips Drive | 18/8 Stainless Steel (200 / Pkg.)

5/16-18 X 1-3/8" Machine Screws | Flat Head Phillips Drive | 18/8 Stainless - Main image
$29.44 $49.06 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 1-3/8"
  • Drive type: Phillips
  • Head style: Flat Head
  • Material: 18/8 Stainless Steel
  • Thread: 5/16-18 UNC (coarse)

Features

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

Sofia ★★★★★

The 18/8 stainless steel on these screws really delivers; I used them to replace some rusted fasteners on an outdoor planter box and they look just as new after a week of rain. The Phillips drive bit into the wood cleanly without stripping, which was my main worry. Definitely glad I grabbed a full p

Eva ★★★★★

Had a loose hinge on my gate that needed these exact 1-3/8" screws—the flat heads sit flush and the stainless hasn't shown a speck of rust after a week of rain.

Alexander ★★★★★

Pulled these out of the pack and the Phillips drive grabbed the bit without any stripping—that 18/8 stainless feels solid and the threads are cleanly cut. I’ve got them holding a gate hinge outside, and the fact they’re non-magnetic is a nice bonus since I’m using them near a compass. Exactly what I