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Customer Favorite 5/8-11 X 2 1/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic Usa (25) Complete Set [0Dpk2fbc]

$40.99 $131.99 -69%

5/8-11 x 2 1/4 L9 Hex Cap Screw Yellow Zinc PlatedIntroducing the L9® High Tensile Strength Hex Cap Screw, a premium fastening solution designed for demanding applications. These screws are crafted with precision and engineered to withstand high stre

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Customer Favorite 5/8-11 X 2 1/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic Usa (25) Complete Set [0Dpk2fbc]

5/8-11 x 2 1/4 L9 Hex Cap Screw Yellow Zinc Plated

Introducing the L9® High Tensile Strength Hex Cap Screw, a premium fastening solution designed for demanding applications. These screws are crafted with precision and engineered to withstand high stress environments, making them an ideal choice for severe service conditions. With their exceptional mechanical strength, these screws offer unparalleled performance and reliability.
  • Domestic USA Manufacturing – Brighton Best proudly manufactures these screws right here in the USA, ensuring the highest quality standards and support.
  • Yellow Zinc Plating – The yellow zinc plating provides excellent corrosion resistance, extending the lifespan of the screws and maintaining their appearance.

Robust Specifications and Features

The L9® High Tensile Strength Hex Cap Screws are made from high-grade AISI 8640H alloy steel, which is renowned for its strength and durability. Each screw is rigorously tested to meet ASTM F606 standards, ensuring that they meet the highest industry benchmarks for hardness, classification, fit, and elongation.
  • 180,000 psi Tensile Strength – These screws boast a minimum tensile strength of 180,000 psi, making them one of the strongest off-the-shelf fastening systems available.
  • Specialized Plating – The yellow zinc plating is applied to a minimum thickness of .0002", as per ASTM B633 Type 2 Class 5 SCI, providing superior corrosion resistance and longevity.

Applications and Benefits

Whether you're working on a construction project, machinery assembly, or any other high-stress application, the L9® High Tensile Strength Hex Cap Screw is the perfect choice. Their exceptional strength and corrosion resistance make them suitable for a wide range of industries, including automotive, aerospace, and heavy equipment.
  • Severe Service Environments – These screws are designed to perform in challenging conditions, ensuring that your fastened components remain secure and reliable.
  • Proper Torque-Tension Control – The special features of these screws allow for precise torque-tension control, which results in high clamp loads when using the correct tightening methods.
Choose the L9® High Tensile Strength Hex Cap Screw for your next project and experience the difference in quality and performance.

What Our Customers Say

January 28, 2026

Absolutely no complaints!

The product is a very good quality piece of tech.

- Anika V..

January 28, 2026

Absolutely no complaints!

The product is a very good quality item overall.

- Gwendolyn C..

January 28, 2026

Absolutely no complaints!

The quality is consistently high.

- Owen W..

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