Mutual Screw & Supply

5/16-18 X 1-1/2" Machine Screws | Flat Head Slotted Drive | Plain Steel (400 / Pkg.)

5/16-18 X 1-1/2" Machine Screws | Flat Head Slotted Drive | Plain Steel (400 / - Main image
$41.58 $58.56 In stock

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

Specs

  • Dimensions: 5/16-18 1-1/2"
  • Drive type: Slotted
  • Head style: Flat Head
  • Material: Plain Steel
  • Thread: 5/16-18 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 (4.4 / 5 · 5 reviews)

Henry Y. ★★★★★

Got a full 400-count box for some shop shelving builds and every single screw seated flush without any burrs. The slotted heads grab my flat-blade driver nicely, no cam-out frustrations. Exactly what I needed for indoor framing duty.

Leo ★★★★★

The threads are clean and consistent across all 400 pieces, which made driving them into pre-drilled wood much smoother than I expected. I used a handful for assembling a workbench in my garage, and the flat heads sit perfectly flush.

Natalie ★★★★★

The slotted heads on these machine screws catch my screwdriver perfectly without slipping, which I really appreciate when working in tight spaces. For $20 I got 400 pieces, so this box will last me through several projects.