S-90114A131 2-56 x 1/2" ASME B18.6.3 Brass Fillister Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ideal for humid or demanding industrial environments
• Excellent torque transmission with a slotted drive style and fillister head design for secure, reliable fastening
• High tensile strength of 50,000 psi ensures dependable performance under mechanical stress
• Precise Class 2A thread fit guarantees smooth assembly and consistent engagement in UNC coarse threaded applications
• Rockwell B40 hardness provides enhanced durability and resistance to wear over repeated use
• Full 1/2" threading offers maximum grip and holding power across the entire screw length
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures regulatory adherence for global industrial applications

Professional Applications & Engineering Value

This 2-56 UNC brass fillister head slotted screw is engineered to address critical fastening challenges in precision mechanical assemblies. The high, narrow rounded head profile allows for flush mounting in countersunk holes while providing a larger bearing surface for improved load distribution. Made from durable brass material, it offers excellent electrical conductivity and natural corrosion resistance, making it ideal for electrical components, marine equipment, and plumbing systems where galvanic corrosion is a concern. The coarse UNC threading ensures quick installation and reliable performance in softer materials or applications requiring frequent disassembly. With 50,000 psi tensile strength and Rockwell B40 hardness, this screw maintains structural integrity in vibrating environments, preventing loosening and maintaining secure connections in industrial machinery, automotive components, and precision instruments.

Specification Summary & Compliance

This rounded head screw features precise Class 2A thread fit tolerances according to UNC standards, ensuring consistent threading performance. Manufacturing follows ASME B18.6.3 specifications for dimensional accuracy and quality control. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for international markets and environmentally conscious applications.