L-9 Hex Head Cap Screws – USA Made, Yellow Zinc Cr3 Plated for Superior Strength and Corrosion Resistance
L-9 hex head cap screws are premium, high-strength fasteners manufactured in the USA, designed for the most demanding industrial and structural applications. Produced from alloy steel and through-hardened for maximum tensile strength, L-9 bolts offer a minimum tensile strength of 180,000 PSI, making them significantly stronger than standard Grade 8 fasteners.
These L-9 cap screws are finished with yellow zinc trivalent chromium (Cr3) plating, offering an attractive appearance and enhanced corrosion resistance without the environmental hazards of hexavalent chromium. The yellow zinc finish also provides lubricity, making installation smoother and reducing the risk of galling during torque.
L-9 fasteners are engineered to meet or exceed stringent specifications, ensuring reliable performance in high-load, high-vibration, and high-temperature environments. Each bolt is traceable and lot-tested for hardness, tensile strength, and dimensions, making them ideal for critical applications where safety and durability are paramount.
Specifications:
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Material: Alloy steel, through-hardened
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Plating: Yellow Zinc Cr3 (Trivalent Chromium)
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Tensile Strength: 180,000+ PSI (typical)
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Head Type: Hex head cap screw
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Standards: Manufactured in the USA to meet ASTM and proprietary L-9 specifications
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Identification: Stamped “L9” for traceability
Applications:
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Heavy equipment manufacturing
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Agricultural and construction machinery
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Automotive suspensions and frames
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Hydraulic systems
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Structural steel assemblies
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High-load bolted joints and flanged connections
Choose L-9 USA-manufactured hex head cap screws with yellow zinc Cr3 plating for unmatched strength, corrosion protection, and reliability. Ideal for high-performance builds where only the best fasteners will do. Contact us today for technical support.
