S-94070A081 2-56 x 1/2" ASME B18.6.3 Brass Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance due to high-quality brass construction, ensuring long-term reliability in humid or demanding industrial environments
• Excellent electrical conductivity making it ideal for electrical assemblies and grounding applications where metal-to-metal contact is critical
• High tensile strength of 50,000 psi provides reliable fastening performance and resistance to mechanical stress in various applications
• Rockwell B40 hardness offers optimal durability and deformation resistance while maintaining machinability for precise installations
• Class 2A thread fit with UNC coarse threading ensures easy assembly and disassembly while maintaining secure fastening in most materials
• Phillips drive design with No. 1 size provides efficient torque transfer and reduces cam-out during installation
• Pan head profile with standard rounded design offers a low-profile finish that sits flush while providing good bearing surface

Professional Applications & Engineering Value

This 2-56 UNC brass pan head Phillips machine screw delivers exceptional performance in electrical enclosures, instrumentation, and precision mechanical assemblies where corrosion resistance and electrical conductivity are paramount. The fully threaded design with coarse UNC threading ensures maximum grip strength in softer materials while the brass construction prevents galvanic corrosion when used with dissimilar metals. Engineered with Rockwell B40 hardness and 50,000 psi tensile strength, this fastener maintains integrity under vibration and thermal cycling, making it ideal for industrial controls, telecommunications equipment, and marine applications where reliability cannot be compromised. The Phillips drive system allows for efficient installation in confined spaces while the pan head design provides a professional finish.

Specification Summary & Compliance

This precision-engineered fastener features Class 2A thread fit per UNC standards with dimensional accuracy maintained throughout production. The screw complies with ASME B18.6.3 specifications for machine screws and meets stringent regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance. Manufacturing follows precise dimensional controls with 0.086" thread diameter, 1/2" length, and 0.167" head diameter to ensure consistent performance and interchangeability in industrial applications.