9/16-18 x3-1/2 Grade 8 Fine Hex Cap Screws

Brand: Midwest

SKU: 56323

Product Attributes:
  • Finish: Yellow Zinc
  • Material: Steel
  • Brand: Midwest
  • Scale: Standard
  • Length: 3-1/2"
  • Diameter: 9/16"
  • Drive Size: 13/16" Wrench/Socket
  • Drive Type: Hex
  • Thread Type: Fine
  • Package Type: 5lb Box

Product Description:

These 9/16-18 x 3-1/2 Grade 8 Fine Hex Cap Screws are precision-engineered bolts crafted from high-strength Grade 8 steel, offering exceptional durability and reliable performance in demanding industrial and mechanical applications. Featuring a yellow zinc finish for corrosion resistance, these fine thread bolts provide superior holding power and resistance to loosening caused by vibration, making them ideal for use in automotive, construction, and heavy machinery settings.

The hex head design with an integrated washer ensures easy installation and removal using standard wrenches or sockets, while the clear head stamping allows for quick grade identification even after installation. With precise threading that guarantees smooth engagement with nuts, these bolts maintain firm connections under stress, delivering enhanced tension and shear strength compared to coarse thread alternatives.

Perfect for professionals and DIY enthusiasts alike, these Grade 8 Fine Hex Cap Screws combine strength, reliability, and ease of use to meet the rigorous demands of critical fastening tasks.

Features:

  • Manufactured from Grade 8 steel for reliable strength and long‑lasting performance in demanding applications.
  • Head stamping provides easy class/grade identification even after installation
  • Hex head with integrated washer allows for easy installation and removal with standard wrenches or sockets and improved holding power
  • Precise threading provides smooth engagement with nuts to provide maximum holding power, ensuring components remain firmly connected under stress
  • Fine thread bolts provide more strength in tension and shear and resist loosening from vibration better than coarse thread bolts