Mutual Screw & Supply

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

5/16-18 X 1" Machine Screws | Flat Head Slotted Drive | Plain Steel (400 / Pkg.) - Main image
$36.05 $49.38 In stock

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

Specs

  • Dimensions: 5/16-18 1"
  • 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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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)

Harper ★★★★★

I needed a hundred of these for a plywood jig, and the fact they come in a 400-pack means I’ll probably never run out. The slotted flat heads sat flush without any wobble, and the plain steel finish felt solid under the driver.

Adam L. ★★★★★

These flat head screws seated perfectly flush in my cabinet hinge holes, and the slotted drive gave me good control with a manual screwdriver. The 400-piece count is great for having spares on hand, though the plain steel does mean I have to keep them dry.

Michael ★★★★★

Bought a full box for a furniture repair project and the slotted heads let me get good torque with a standard screwdriver. The plain steel finish works fine for indoor use, though I’ll remember to keep them away from moisture.