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Finally 3/8"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow Cr+3 (made In U.s.a.) - Hot Selling [l6UWwXbs]

$30.99 $99.99 -69%

Superior Strength Hex Head Cap Screws Introducing our premium 3/8"-24 L9 Hex Head Cap Screws, designed for high-stress applications where maximum strength and precision are essential. These screws are crafted in the USA from high-grade alloy steel, o

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Finally 3/8"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow Cr+3 (made In U.s.a.) - Hot Selling [l6UWwXbs]

Superior Strength Hex Head Cap Screws

Introducing our premium 3/8"-24 L9 Hex Head Cap Screws, designed for high-stress applications where maximum strength and precision are essential. These screws are crafted in the USA from high-grade alloy steel, offering exceptional mechanical properties. With a tensile strength of 180,000 PSI, they stand out as the highest in the industry, ensuring unmatched performance in demanding environments.

Why Choose L9 Hex Head Cap Screws?

Our L9 Hex Head Cap Screws are SAE graded for excellence, identified by the "L9" and nine radial lines on the head for easy recognition. The fine thread (UNF) design provides superior clamp load and vibration resistance, making them ideal for secure fastening in various applications. The Zinc Yellow CR+3 plating adds a professional finish while enhancing corrosion resistance, ensuring durability and longevity. Here are some key benefits:

  • Increased Head Height: Our screws feature a slightly higher head height compared to standard hex cap screws, providing better wrench contact and reduced slippage.
  • Radius Under Head: The added strength reduces stress concentrations and minimizes the risk of fatigue failure.

Ideal for Demanding Applications

These 3/8"-24 L9 Hex Head Cap Screws are perfect for precision machinery, heavy-duty equipment, structural assemblies, and other industrial applications requiring a secure hold. The advanced surface finish with Zinc Yellow CR+3 plating not only looks professional but also offers superior corrosion resistance. Key mechanical properties include hardness, surface hardness, tensile strength, yield strength, proof load strength, elongation, and reduction of area, all of which ensure optimal performance. Our products meet or exceed SAE J429 Grade L9 and ASME B18.2.1 specifications, providing you with peace of mind.

What Our Customers Say

January 22, 2026

Absolutely no complaints!

A great item. I recommend it.

- Bobbie R..

January 22, 2026

Absolutely no complaints!

Very happy with this purchase.

- Noah B..

January 22, 2026

Absolutely no complaints!

This is a very solid choice.

- Isabelle B..

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