S-90276A859 2-56 x 1/2" ASME B18.6.3 Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• High tensile strength of 60,000 psi ensures reliable load-bearing capacity and joint integrity
• Rockwell B69 hardness provides excellent durability and resistance to wear during installation
• Class 2A thread fit offers consistent engagement and easy assembly with standard UNC nuts
• Fully threaded design allows for maximum grip and uniform stress distribution along the entire length
• Slotted drive rounded head enables straightforward installation with common tools while maintaining a low profile
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees regulatory adherence for global supply chain integration

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 2-56 UNC zinc-plated steel screws address critical fastening challenges where corrosion resistance and mechanical reliability are paramount. The coarse thread design ensures rapid installation and secure holding power in materials prone to stripping, while the rounded head with slotted drive simplifies maintenance and disassembly in confined spaces. With a fully threaded configuration and right-hand thread direction, these screws provide uniform clamping force, making them ideal for electronics enclosures, machinery panels, and automotive assemblies where vibration resistance and long-term performance are essential.

Specification Summary & Compliance

This 1/2" length screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. Manufacturing adheres to ASME B18.6.3 specifications for consistent quality, and the product is verified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.