Mutual Screw & Supply

#4-40 X 3/8" Machine Screws | Flat Head Phillips Drive | Plain Steel (3,600 / Pkg.)

#4-40 X 3/8" Machine Screws | Flat Head Phillips Drive | Plain Steel (3,600 / - Main image
$33.44 $45.81 In stock

Plain (uncoated) steel machine screw for general-purpose, indoor fastening where corrosion resistance is not required.

Specs

  • Dimensions: #4-40 3/8"
  • Drive type: Phillips
  • Head style: Flat Head
  • Material: Plain Steel
  • Thread: #4-40 UNC (coarse)

Features

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

Olivia ★★★★★

These are exactly the right size for the small brackets I'm mounting, and the flat head sits flush perfectly. For the price, you get a solid quantity of decent quality screws.

Emma ★★★★★

I needed a bulk pack for small fixture repairs, and the 3,600 count means I won't run out anytime soon. The flat heads sit flush in wood without splitting, which is exactly what I was hoping for.

Sophia ★★★★★

The Phillips heads seat cleanly without stripping, even when I'm driving them fast with a power tool. Having 3,600 in one box means I finally stopped rationing screws for small electronics projects.