Mutual Screw & Supply

3/8-16 X 3-1/2" Machine Screws | Flat Head Phillips Drive | 18/8 Stainless Steel (100 / Pkg.)

3/8-16 X 3-1/2" Machine Screws | Flat Head Phillips Drive | 18/8 Stainless - Main image
$60.49 $100.82 In stock

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

Specs

  • Dimensions: 3/8-16 3-1/2"
  • Drive type: Phillips
  • Head style: Flat Head
  • Material: 18/8 Stainless Steel
  • Thread: 3/8-16 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: 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 (4.6 / 5 · 5 reviews)

Adam L. ★★★★★

Packed a full box of 100 of these 3/8-16 stainless screws, and the Phillips heads seated cleanly without stripping. The 3-1/2" length gave me plenty of grip for a thick bracket assembly, and they stayed non-magnetic under a magnet test. Solid hardware for the price.

Emily ★★★★★

I needed screws that wouldn't rust near the saltwater, and these 304 stainless ones haven't shown a speck after a month outside. The Phillips drive seated firmly without stripping, which was a relief.

Amelia Z. ★★★★★

These flat heads sat perfectly flush when I mounted some outdoor conduit brackets, and the 18/8 stainless gives me peace of mind it won't rust. The 3-1/2" length was just right for going through a thick metal plate, and the Phillips drive bit seated nicely without stripping.