Mutual Screw & Supply

#4-40 X 5/16" Machine Screws | Round Head Slotted Drive | Brass (800 / Pkg.)

#4-40 X 5/16" Machine Screws | Round Head Slotted Drive | Brass (800 / Pkg.) - Main image
$33.84 $47 In stock

Brass machine screw for general-purpose, light-duty, and decorative fastening. Naturally corrosion resistant, non-magnetic, and electrically conductive.

Specs

  • Dimensions: #4-40 5/16"
  • Drive type: Slotted
  • Head style: Round Head
  • Material: Brass
  • Thread: #4-40 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Round head profile
  • Slotted drive
  • Brass construction
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Standard Shipping · United States: $0.00

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)

George ★★★★★

The bag of 800 is a solid deal if you're restoring old switch plates or radios—these brass #4-40s match the originals perfectly and the slotted heads take a standard screwdriver without cam-out. They're non-magnetic too, which mattered to me for a small brass compass project.

Kevin ★★★★★

I needed slotted brass screws for a vintage lamp restoration, and these #4-40s fit perfectly with a clean, flush finish. The slot cut is deep enough that my old driver didn't cam out once.

David ★★★★★

The bag of 800 means I won't run out mid-project, and the slot heads bite nicely with a standard driver. These are my go-to for any small brass trim where corrosion resistance matters.