S-96880A216 4-40 x 1/4" ASME B18.6.3, FF-S-92, QQ-P-416, MS35206-213, NASM35206 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through cadmium plating, extending service life in demanding industrial environments
• Exceptional tensile strength of 60,000 PSI ensures reliable performance under high-stress applications
• Precision Class 2A thread fit guarantees consistent engagement and vibration resistance in assembled components
• Optimized Phillips drive design (No. 1 size) provides secure tool engagement and reduces cam-out during installation
• Full threading configuration enables maximum grip length and uniform stress distribution along the entire fastener
• Standardized pan head profile offers excellent bearing surface while maintaining low-profile installation
• Comprehensive regulatory compliance including RoHS 3 and REACH ensures environmental and safety standards are met

Professional Applications & Engineering Value

Engineered for precision assembly applications, these 4-40 UNC coarse thread screws with cadmium-plated steel construction address critical challenges in industrial fastening. The combination of Rockwell B69 hardness and 60,000 PSI tensile strength provides reliable performance in vibration-prone environments where fastener integrity is paramount. The fully threaded right-hand design ensures maximum thread engagement in thin materials and blind holes, while the rounded pan head with Phillips drive facilitates efficient installation in confined spaces. These screws deliver consistent performance in electronics enclosures, machinery components, and aerospace assemblies where ASME B18.6.3 compliance and corrosion resistance are essential for long-term reliability.

Specification Summary & Compliance

Manufactured to exacting Class 2A thread fit tolerances per UNC standards, these fasteners maintain precise dimensional accuracy with coarse thread spacing for rapid assembly. Compliance with ASME B18.6.3, Fed. Spec. FF-S-92, QQ-P-416, MS35206-213, and NASM35206 specifications ensures consistent quality and interchangeability. The 1/4" length and 0.219" head diameter provide standardized dimensions for engineering applications. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to current substance restriction requirements.