Mutual Screw & Supply

1/4-20 X 3/8" Machine Screws | Flat Head Slotted Drive | Plain Steel (1,200 / Pkg.)

1/4-20 X 3/8" Machine Screws | Flat Head Slotted Drive | Plain Steel (1,200 / - Main image
$30.79 $47.37 In stock

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

Specs

  • Dimensions: 1/4-20 3/8"
  • Drive type: Slotted
  • Head style: Flat Head
  • Material: Plain Steel
  • Thread: 1/4-20 UNC (coarse)

Features

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

Joseph ★★★★★

I bought these for a quick workbench project and the flat head sits perfectly flush every time—no binding or stripping. 1,200 screws in one package is exactly what I needed to stock my shop without constant reordering.

Elizabeth P. ★★★★★

I’m replacing mismatched fasteners on an old workbench and these 1/4-20 by 3/8" flat heads fit perfectly into pre-tapped holes. The slotted drive makes them easy to snug down with a manual screwdriver, and for indoor use the plain steel surface is all I needed. A full box of 1,200 means I won’t run

Julian ★★★★★

For a bulk pack of plain steel screws, these are exactly what I needed for assembling jigs in my workshop. The 1/4-20 threads catch cleanly in pre-tapped holes, and 1,200 pieces in one package means I won’t run out mid-project.