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Modern Design 5/8-11 X 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic Usa (25) - Free 2-day Shipping [U5hcrLae]

$25.99 $83.99 -69%

5/8-11 Hex Cap Screws: High-Quality and DurableIntroducing our premium 5/8-11 x 3 1/2 Grade 8 Hex Cap Screws, designed for exceptional strength and reliability. These screws are meticulously crafted in the USA from medium carbon alloy steel, ensuring

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Modern Design 5/8-11 X 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic Usa (25) - Free 2-day Shipping [U5hcrLae]

5/8-11 Hex Cap Screws: High-Quality and Durable

Introducing our premium 5/8-11 x 3 1/2 Grade 8 Hex Cap Screws, designed for exceptional strength and reliability. These screws are meticulously crafted in the USA from medium carbon alloy steel, ensuring top-notch quality and durability. With diameters ranging from 1/4 to 1 1/2 inches, our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications, and diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD. This means you're getting a product that is built to last and designed for demanding applications.
  • USA Manufacturing: Proudly made in the USA, these screws meet the highest quality standards.
  • Exceeds Industry Specifications: Meets or exceeds SAE J429 and ASTM A354 Grade BD for superior performance.

Technical Specifications and Properties

Our yellow zinc plated bolting not only enhances the aesthetic appeal but also provides excellent corrosion resistance. The typical hardness on diameters 1/4 to 2 1/2 inches is HRC 33-39, ensuring robustness and durability. For diameters over 2 1/2 inches, the hardness ranges from HRC 31-39, maintaining a high level of strength. The tensile strength on diameters 1/4 to 2 1/2 inches is a minimum of 150,000 psi, and diameters over 2 1/2 inches meet a minimum of 140,000 psi, making these screws ideal for heavy-duty applications.
  • Yellow Zinc Plating: Enhances corrosion resistance and provides a pleasing aesthetic finish.
  • High Tensile Strength: Ensures long-lasting performance and reliability.

Practical Applications and Benefits

These Grade 8 Hex Cap Screws are perfect for a wide range of applications, from construction and machinery assembly to automotive and industrial uses. Their high-quality construction and robust specifications make them a reliable choice for professionals who demand the best. With their exceptional strength and durability, these screws are sure to exceed your expectations and provide peace of mind for your projects.
  • Wide Range of Applications: Ideal for construction, machinery, automotive, and industrial uses.
  • Professional-Grade Performance: Built to last and designed for demanding environments.

What Our Customers Say

January 16, 2026

Absolutely no complaints!

A great item with great performance.

- Iago S..

January 16, 2026

Absolutely no complaints!

A great item that is very clever.

- Rhiannon J..

January 16, 2026

Absolutely no complaints!

A great tool that is very useful.

- Vaughan M..

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