S-99468A215 5/16"-18 x 3/4" ASME B18.6.3 Aluminum Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio from 2024 aluminum construction, ideal for applications where reducing mass is critical without sacrificing performance.
• Reliable fastening in coarse-thread applications with 5/16"-18 UNC threading and Class 2A fit, ensuring easy assembly and vibration resistance.
• High tensile strength of 50,000 psi provides dependable load-bearing capacity for demanding industrial environments.
• Durable Rockwell B55 hardness offers excellent resistance to wear and deformation over extended use.
• Flush mounting capability with an 82° countersink angle and standard flat head profile for a smooth, secure finish.
• Full threading along the 3/4" length allows for maximum grip and adjustment flexibility in various material thicknesses.
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures adherence to industry standards and environmental safety regulations.

Professional Applications & Engineering Value

Engineered for precision and endurance, these 2024 aluminum flat head screws address common challenges in aerospace, automotive, and machinery assembly. The slotted drive style facilitates straightforward installation with standard tools, while the coarse UNC threading and Class 2A thread fit enhance engagement in softer materials or where rapid assembly is needed. The 82° countersink angle ensures a seamless fit in pre-drilled holes, minimizing protrusion and improving aerodynamics or safety in enclosed systems. With a tensile strength of 50,000 psi and Rockwell B55 hardness, these screws resist loosening under stress and corrosion, making them a reliable choice for high-performance industrial fastening where weight savings and regulatory compliance are paramount.

Specification Summary & Compliance

This 5/16"-18 UNC flat head slotted screw features precise Class 2A thread fit per inch-system standards, ensuring consistent dimensional accuracy. It is fully threaded and manufactured in compliance with ASME B18.6.3 specifications for mechanical fasteners. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments with strict environmental and health safety requirements.