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New Arrival 9/16-18 X 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic Usa (125) Add To Cart [tLmC4VrS]

$59.99 $191.99 -69%

9/16-18 Hex Cap Screw Zinc Plated Grade 5 Discover the premium quality of the 9/16-18 Hex Cap Screw Zinc Plated Grade 5, a top-tier fastener designed for durability and reliability. Crafted in the USA, this Grade 5 Hex Cap Screw boasts superior tensi

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New Arrival 9/16-18 X 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic Usa (125) Add To Cart [tLmC4VrS]

9/16-18 Hex Cap Screw Zinc Plated Grade 5

Discover the premium quality of the 9/16-18 Hex Cap Screw Zinc Plated Grade 5, a top-tier fastener designed for durability and reliability. Crafted in the USA, this Grade 5 Hex Cap Screw boasts superior tensile strength and is manufactured from medium carbon steel, ensuring longevity and resilience in a variety of applications. With a robust tensile strength of 120,000 psi for diameters up to 1 inch and 105,000 psi for diameters over 1 inch to 1 1/2 inches, these screws are built to withstand heavy loads.

Key Specifications and Features

Our 9/16-18 Hex Cap Screw comes with several key features that make it an excellent choice for professional use. The screw features rolled threads, providing excellent thread quality and reduced risk of thread stripping. With hardness ranging from HRC 25-34 for diameters 1/4 to 1 inch, and HRC 19-30 for diameters over 1 inch to 1 1/2 inches, these screws are engineered for high performance. Additionally, all products meet or exceed SAE J429 Grade 5 specifications, guaranteeing superior quality and reliability.
  • Hardness: HRC 25-34 (1/4 to 1 inch), HRC 19-30 (over 1 inch to 1 1/2 inches)
  • Tensile Strength: Minimum 120,000 psi (1/4 to 1 inch), 105,000 psi (over 1 inch to 1 1/2 inches)

Practical Applications and Benefits

Ideal for both DIY projects and professional construction, the 9/16-18 Hex Cap Screw Zinc Plated Grade 5 offers versatility and dependability. Its zinc plating not only enhances the screw's corrosion resistance but also provides a clean, professional appearance. This product is perfect for use in automotive repairs, machinery assembly, construction projects, and more. With a domestic USA origin, you can trust the quality and reliability of this fastener. By choosing this Grade 5 Hex Cap Screw, you're investing in a product that will not only meet your needs but also exceed your expectations, ensuring a job well done every time.

What Our Customers Say

February 4, 2026

Absolutely no complaints!

This has become my favorite and new possession.

- Barrett W..

February 4, 2026

Absolutely no complaints!

I'm happy with my product and its entire, whole purchase.

- Macsen H..

February 4, 2026

Absolutely no complaints!

A great tool that is so very, very easy to handle.

- Carwyn Y..

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