1/4"-20 L9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

1/4"-20 L-9 Hex Head Cap Screw – Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

Part Numbers: 440002, 440006, 440010, 440012, 440014, 440016, 440018, 440020, 440022, 440024, 440026, 440028, 440030

Introducing our premium 1/4"-20 L-9 Hex Head Cap Screws, the pinnacle of fastening strength and reliability. Engineered for the most demanding applications, these screws are made in the USA from high-grade alloy steel and feature an impressive tensile strength of 180,000 psi—the highest in the industry.

Why Choose Our L-9 Hex Head Cap Screws?

L-9 fasteners represent the highest SAE grade for hex cap screws, designed to withstand extreme stress and load conditions. Identified by nine radial lines on the head, these screws ensure easy recognition of their superior grade. The Zinc Yellow CR+3 plating provides enhanced corrosion resistance and a professional finish.

Key Benefits:

• Unmatched Tensile Strength: With a tensile strength of 180,000 psi, these screws can handle the most demanding tasks.
• High-Grade Alloy Steel: Manufactured from premium alloy steel for exceptional durability.
• Nine Radial Lines: Head markings with nine lines indicate the highest SAE grade and facilitate easy identification.
• Zinc Yellow CR+3 Plating: Offers superior corrosion resistance and aids in torquing.
• Made in the USA: Ensures top-quality manufacturing and compliance with industry standards.
• Enhanced Design Features:
  • Thicker heads for better wrench contact and reduced slippage.
  • Radius under the head adds strength and reduces stress concentrations.
  • Smooth washer-bearing surfaces for uniform load distribution.
• Versatile Applications: Ideal for automotive, aerospace, heavy machinery, construction, and more.
• Bulk Availability: Cost-effective solutions for businesses requiring large quantities.

Ideal Applications:

Our L-9 Hex Head Cap Screws are the fasteners of choice in high-stress environments where failure is not an option. They are perfect for applications that demand maximum strength and reliability, such as heavy-duty machinery, earth-moving equipment, automotive engines, aerospace components, structural assemblies, and critical construction projects.

Technical Specifications:

• Size: 1/4"-20 (Diameter: 0.250", Threads per Inch: 20)
• Length Options: Available in various lengths to suit your specific needs (please select from the options above)
• Material: High-Grade Alloy Steel (Grade L-9)
• Finish: Zinc Yellow CR+3 Plating for enhanced corrosion resistance
• Tensile Strength: Minimum 180,000 psi
• Head Style: Hex Head with nine radial lines for SAE Grade L-9 identification
• Thread Type: Coarse Thread (UNC)
• Standards: Meets or exceeds SAE J429 Grade L-9 specifications
• Manufactured In: United States of America

Full L-9 Product line

Place Your Order Today!

Upgrade your assemblies with the unparalleled strength and reliability of our 1/4"-20 L-9 Hex Head Cap Screws. Don't compromise on quality when it comes to critical applications. Order now to take advantage of our competitive pricing and ensure your projects are equipped with the best fastening solutions available.