Mutual Screw & Supply

#4-40 X 3/8" Machine Screws | Binding Head Slotted Drive | Brass (800 / Pkg.)

#4-40 X 3/8" Machine Screws | Binding Head Slotted Drive | Brass (800 / Pkg.) - Main image
$32.65 $52.66 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 3/8"
  • Drive type: Slotted
  • Head style: Binding Head
  • Material: Brass
  • Thread: #4-40 UNC (coarse)

Features

  • Machine-thread screws for use with nuts or tapped holes
  • Binding head profile
  • Slotted drive
  • Brass 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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Delivery costs

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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)

Matthew ★★★★★

I was replacing some old decorative brackets on a jewelry box and these brass screws matched perfectly — the corrosion resistance is a nice bonus for anything that might get occasional moisture exposure. Binding head sits flush without catching on fabric, which saved me having to countersink.

Ruby ★★★★★

Slot drive on these #4-40s is nicely cut, so a standard screwdriver bites without slipping. The brass finish looks clean for the small decorative joints I used them on, and the 3/8" length was just right.

Aurora J. ★★★★★

Needed a bunch of small brass screws for a model ship project, and these #4-40s have just the right weight and shine. The binding heads give a neat, low-profile finish that looks much better than regular pan heads.