Mutual Screw & Supply

3/8-16 X 4" Machine Screws | Round Head Slotted Drive | Plain Steel (100 / Pkg.)

3/8-16 X 4" Machine Screws | Round Head Slotted Drive | Plain Steel (100 / Pkg.) - Main image
$33.95 $52.23 In stock

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

Specs

  • Dimensions: 3/8-16 4"
  • Drive type: Slotted
  • Head style: Round Head
  • Material: Plain Steel
  • Thread: 3/8-16 UNC (coarse)

Features

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

George ★★★★★

I needed some long 3/8-16 bolts for a jig I was building, and these round heads with the deep slotted drive fit the bill perfectly. The threads were clean and the plain steel finish held up fine for my indoor workbench project.

Benjamin ★★★★★

The slot on the head is cut nice and deep, so my flathead driver grabs without slipping even when I'm torquing these into hardwood. For the price you get a full 100 count, and the plain steel finish is perfectly fine for my indoor shop projects.

Lucy X. ★★★★★

These were exactly what I needed for a woodworking jig where I needed the extra length; the 4 inches gave me plenty of thread engagement in the hardwood. The plain steel finish makes them easy to mark and adjust before final assembly.