9/16"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

9/16"-18 L9 Hex Head Cap Screw – Fine Thread Alloy Steel Zinc Yellow CR+3 (Made in U.S.A.)

Engineered for demanding applications, our 9/16"-18 L9 Hex Head Cap Screws provide superior strength and longevity. Fabricated from high-grade alloy steel, these fasteners deliver an impressive tensile strength of 180,000 PSI, offering reliable performance in large-scale, high-stress environments. Featuring fine threading (UNF) for precise adjustments, these American-made screws are a cost-effective choice for bulk orders in critical industries.

Advantages of L9 Hex Head Cap Screws

Our bulk L9 fasteners meet the highest SAE specifications, ideal for large-scale projects requiring reliable, durable fasteners in industries like construction, manufacturing, and heavy machinery. Fine threads offer enhanced stability in applications requiring precise torque and alignment.

Enhanced L9 Features:

• Increased Head Height: Taller head profile for optimal wrench engagement, reducing the risk of slippage.
• Radius Under Head: Minimizes stress points for increased durability and strength.
• Uniform Load Distribution: Smooth bearing surface supports even load application, enhancing security.

Key Mechanical Properties:

• Hardness: 38 to 42 HRC
• Surface Hardness: HR15N 81.5 Max
• Tensile Strength: 180,000 PSI Minimum
• Yield Strength: 155,000 PSI Minimum
• Proof Load Strength: 145,000 PSI
• Head Marking: Nine radial lines with "L9" for quick identification

Corrosion-Resistant Finish:

• Zinc Yellow Plating: ASTM F1941/F1941M Fe/Zn 5CN compliant with a minimum 5-micron coating.
• Yellow Trivalent (Cr+3) Coating: Provides superior corrosion protection with a 96-hour salt spray life.

Technical Specifications:

• Size: 9/16"-18 (Diameter: 0.5625", Threads per Inch: 18)
• Length Options: Various lengths to suit specific requirements (select above)
• Material: High-Grade Alloy Steel (L9)
• Finish: Zinc Yellow CR+3 Plating for optimal corrosion resistance
• Thread Type: Fine Thread (UNF)
• Manufactured In: United States

Applications Requiring Bulk Quantities:

Ideal for automotive, aerospace, and heavy equipment industries, our bulk 9/16"-18 L9 Hex Head Cap Screws offer high-strength fastening solutions for projects requiring precise adjustments and secure performance under intense load.

Explore the Full L9 Product Line

Order Bulk L9 Fasteners Today!

Secure your project with Bulk 9/16"-18 L9 Hex Head Cap Screws. Place your bulk order today and enjoy fast, reliable shipping and expert support from Monster Bolts.