Direct Price Bulk 3/8"-24 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow Cr+3 (made In U.s.a.) Deal Alert: 85% Off [vJICsBfu]

Bulk 3/8"-24 L9 Hex Head Cap Screws

Experience the ultimate in fastening solutions with our premium 3/8"-24 L9 Hex Head Cap Screws. Engineered for high-stress applications, these screws are crafted from high-grade alloy steel and are zinc yellow CR+3 plated for enhanced corrosion resistance. With a tensile strength of 180,000 PSI, they offer unmatched performance and reliability. Their fine thread design ensures better clamp load and vibration resistance, making them ideal for secure fastening in demanding environments.

Why Choose Our L9 Hex Head Cap Screws?

Our L9 Hex Head Cap Screws are the pinnacle of SAE grading, designed to withstand extreme loads and stress conditions. Identified by "L9" and nine radial lines on the head, these screws guarantee easy recognition of their superior grade. The fine thread (UNF) design provides better clamp load and vibration resistance, ensuring secure fastening. Additionally, the zinc yellow CR+3 plating offers enhanced corrosion resistance and a professional finish. Key features include increased head height for better wrench contact, a radius under the head to reduce stress concentrations, and a smooth washer-bearing surface for even load distribution.

Superior Mechanical Properties and Technical Specifications

Our 3/8"-24 L9 Hex Head Cap Screws boast superior mechanical properties, including a hardness of 38 to 42 HRC, surface hardness of maximum HR15N 81.5, and a tensile strength of 180,000 PSI. They also have a yield strength of 155,000 PSI and a proof load strength of 145,000 PSI. These screws are made from high-grade alloy steel (Grade L9) and are zinc plated yellow CR+3 for enhanced corrosion resistance. They meet or exceed SAE J429 Grade L9 and ASME B18.2.1 specifications, ensuring compliance with industry standards. Ideal for precision machinery, heavy-duty equipment, structural assemblies, and other demanding industrial applications, these screws are the perfect choice for secure and reliable fastening solutions.