[100 PKG] Machine Screws Combo Round Steel Zinc 1/4-20 X 3 1/2

Mutual ScrewSKU: 1456MCR

Price:
Sale price$16.01per 100( $0.16 each)
Pieces 100
Measurement type Inch
Thread size 1/4-20
Diameter 1/4
Length 3-1/2
Material Steel
Grade Steel
Finish Zinc Plated
Drive Combo
Head style Round
Threads per inch 20
Thread style Fully Threaded
Weight 4.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Machine Screws – Round Head, Steel, Zinc-Plated (1/4-20 x 3-1/2 in). These durable fasteners are designed for secure metal-to-metal assemblies and a wide range of DIY projects.

Featuring a round head for a clean, low-profile finish and a zinc-plated coating for corrosion resistance, these machine screws excel in machinery, enclosures, cabinets, and other metalwork where dependable fastening matters.

  • Round head design provides a smooth profile and easy drive access.
  • Steel construction delivers high strength and long-lasting performance.
  • Zinc-plated finish offers corrosion resistance in indoor and covered outdoor environments.
  • Size and thread 1/4-20 coarse thread (UNC) for reliable engagement with common metal substrates.
  • Length 3-1/2 inches to suit thicker parts and deeper assemblies.

Specifications

  • Size: 1/4-20 x 3-1/2 in
  • Material: Steel
  • Finish: Zinc-plated
  • Head type: Round
  • Thread type: Coarse (1/4-20 UNC)

Perfect for professional repair, maintenance, and new-build projects, these machine screws combine strength, durability, and easy installation for reliable results every time.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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