S-90276A856 2-56 x 3/16" 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 performance in demanding applications
• Rockwell B69 hardness provides excellent durability and wear resistance
• Class 2A thread fit with coarse UNC threading enables quick assembly and secure fastening
• Fully threaded design offers maximum grip and uniform load distribution
• Standard rounded head profile with slotted drive allows for easy installation with common tools
• Compliance with ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental safety standards

Professional Applications & Engineering Value

These 2-56 UNC zinc-plated steel rounded head slotted screws are engineered to address critical industrial challenges, including corrosion in humid or chemical-exposed settings. The zinc-plated steel material combined with Rockwell B69 hardness provides a robust barrier against rust and mechanical stress, extending service life in machinery, electronics, and automotive assemblies. The coarse thread spacing and Class 2A thread fit facilitate rapid installation with minimal cross-threading risks, enhancing production efficiency. Fully threaded for consistent clamping force, these screws are ideal for securing components where vibration resistance and reliability are paramount, supporting industries that prioritize ASME B18.6.3 compliance for precision and safety.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, with a thread size of 2-56 and length of 3/16". It meets ASME B18.6.3 manufacturing specifications, ensuring dimensional accuracy and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and health safety standards without restricted substances.