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The Ultimate 5/8-18 X 3 L9 Hex Cap Screw Yellow Zinc Plated Domestic Usa (150) (top Rated) [5IRAC9Yy]

$77.99 $249.99 -69%

5/8-18 x 3 L9 Hex Cap ScrewIntroducing the 5/8-18 x 3 L9 Hex Cap Screw, a premium fastening solution designed for demanding environments. This screw, with its yellow zinc plated finish, is a testament to quality and durability. Engineered with precis

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The Ultimate 5/8-18 X 3 L9 Hex Cap Screw Yellow Zinc Plated Domestic Usa (150) (top Rated) [5IRAC9Yy]

5/8-18 x 3 L9 Hex Cap Screw

Introducing the 5/8-18 x 3 L9 Hex Cap Screw, a premium fastening solution designed for demanding environments. This screw, with its yellow zinc plated finish, is a testament to quality and durability. Engineered with precision, it is crafted from high-grade AISI 8640H alloy steel, ensuring exceptional strength and reliability.
  • High Tensile Strength: With a minimum tensile strength of 180,000 psi, these screws are built to withstand the most severe service conditions.
  • Superior Plating: The yellow zinc plating not only enhances the aesthetic appeal but also provides excellent corrosion resistance, extending the lifespan of the screw.

L9® High Tensile Hex Cap Screws

The L9® High Tensile Hex Cap Screws are engineered for use in high-stress environments, where reliability is paramount. Brighton Best's commitment to quality is evident in every aspect of these screws, from their robust construction to their stringent quality control processes.
  • ASTM Standards: Each hex cap screw is rigorously tested to meet ASTM F606 standards for hardness, classification, fit, and elongation, ensuring top-notch performance.
  • Domestic USA Manufacturing: Proudly manufactured in the USA, these screws support domestic industry and are subject to stringent quality controls.

Perfect for Severe Service Environments

Whether you're working on an industrial project or a critical infrastructure application, the 5/8-18 x 3 L9 Hex Cap Screw is the ideal choice. Its unique design allows for precise torque-tension control, resulting in high clamp loads and reliable fastening.
  • Severe Service Capable: Engineered for high-stress conditions, these screws are perfect for applications where strength and durability are crucial.
  • Properly Controlled Tightening: The special features of the L9® design enable the development of high clamp loads when using controlled tightening methods, ensuring optimal performance.

What Our Customers Say

January 28, 2026

Absolutely no complaints!

It's a very well-engineered and reliable product.

- Alia G..

January 28, 2026

Absolutely no complaints!

This product is a great example of quality you can count on.

- Enrique L..

January 28, 2026

Absolutely no complaints!

The functionality is intuitive, making it a breeze to use.

- Kai U..

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