5/16"-18 X 1/2" Machine Screws | Undercut Flat Head | Slotted Drive | Steel Zinc Plated (3000/Pkg.)

★★★★★ 4.4 144 reviews

US$121.80
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US$121.80
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 242059512 Release Date 2026/07/19 List Price US$121.80 Model Number 242059512
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Our Machine Screws Slotted Undercut Flat Zinc Plated 5/16-18 X 1/2 are engineered for strong, reliable fastenings in metal assemblies. This slotted, undercut flat-head screw delivers a flush profile with dependable torque and seating in a variety of industrial, automotive, and appliance applications.

  • Drive style: Slotted for use with a flat-blade screwdriver.
  • Head and profile: Undercut flat head designed for flush seating and a clean finish.
  • Finish: Zinc plated for enhanced corrosion resistance and durability.
  • Size and thread: 5/16-18 UNC thread with 1/2 inch length.
  • Material compatibility: Ideal for metal-to-metal fastenings across a wide range of standard applications.

Tip: Ensure proper thread engagement with mating components and use appropriate driving tools to maintain project precision and keep a secure, long-lasting hold.


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4.4 out of 5
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144 ratings | 59 reviews
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