S-97124A749 5/16"-18 x 1 1/2" ASME B18.6.3 Aluminum Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio from 2024 aluminum alloy, offering lightweight durability ideal for weight-sensitive industrial applications
• Superior load-bearing capability with 50,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under mechanical stress
• Precision installation and flush seating with standard 82° countersink angle and flat head design, providing smooth surface finishes
• Efficient drive engagement through Phillips No. 4 drive style, reducing cam-out risks during high-torque assembly
• Wide compatibility with coarse 5/16"-18 UNC threading and Class 2A fit, enabling quick assembly in various materials
• Full-length threading for maximum grip along the entire 1-1/2" length, enhancing fastening security in deep applications
• Regulatory confidence with compliance to ASME B18.6.3, RoHS 3, and REACH, ensuring safety and environmental standards

Professional Applications & Engineering Value

Engineered for demanding environments, these 2024 aluminum flat head screws address critical needs in aerospace, automotive, and electronics assembly where weight reduction without compromising strength is paramount. The fully threaded 5/16"-18 UNC design with coarse spacing ensures rapid installation and vibration resistance in softer materials or pre-tapped holes. With a standard 82° countersink angle and flat head profile, they provide seamless flush mounting to prevent snagging and improve aerodynamics. The Phillips No. 4 drive offers controlled torque application, reducing damage risks in precision components. Ideal for right-hand thread applications requiring consistent performance, these screws deliver long-term reliability in corrosive-prone settings due to aluminum's natural oxidation resistance.

Specification Summary & Compliance

This screw maintains Class 2A thread fit tolerances per UNC standards, ensuring consistent engagement. Manufacturing adheres to ASME B18.6.3 specifications for dimensional accuracy, including head diameter (0.635"), length (1-1/2"), and thread diameter (0.313"). It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing no restricted hazardous substances. The inch-based system aligns with North American industrial practices for seamless integration.