S-90273A209 8-32 x 3" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening in industrial applications
• Optimized flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
• Enhanced installation efficiency through Phillips No. 2 drive design and coarse UNC threading for quick, secure assembly
• Precision thread engagement with Class 2A fit and partial threading for controlled fastening depth and vibration resistance
• Regulatory compliance assurance meeting ASME B18.6.3 standards for dimensional accuracy and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel flat head screws deliver critical engineering solutions where flush surface mounting and corrosion resistance are paramount. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in machinery assembly, electrical enclosures, and structural applications where vibration resistance is crucial. The partial threading design provides controlled clamping force distribution, preventing material damage in wood, metal, and composite substrates. The coarse UNC thread pattern enables rapid installation while maintaining secure fastening, making these Phillips drive screws ideal for high-volume production environments requiring both speed and reliability. The zinc plating surface treatment offers essential protection against oxidation and environmental degradation, extending service life in industrial settings.

Specification Summary & Compliance

These 3" flat head screws feature precision 8-32 UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy and reliable engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional standards and performance requirements. The products are fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and regulatory adherence for global industrial applications.