S-90287A203 8-32 x 1 1/2" ASME B18.6.3 Tamper-Resistant One-Way-Drive Steel Round 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 heavy-duty applications
• Quick installation with coarse UNC threads and Class 2A thread fit ensuring smooth engagement and reduced assembly time
• Maximum grip strength through fully threaded design providing consistent clamping force along the entire 1-1/2" length
• Enhanced tamper resistance with one-way drive style for security applications where disassembly prevention is critical
• Industry-standard compatibility with rounded head profile designed for universal fitment across various industrial equipment
• Regulatory compliance assurance meeting ASME B18.6.3 specifications for consistent quality and performance

Professional Applications & Engineering Value

These 8-32 UNC zinc-plated steel rounded head screws deliver critical engineering solutions for industrial assembly challenges. The zinc-plated steel construction provides essential corrosion protection in manufacturing environments where exposure to moisture and chemicals is common. The coarse thread design with Class 2A thread fit ensures rapid installation while maintaining precise tolerances, significantly reducing assembly time in high-volume production settings. The fully threaded configuration offers uniform stress distribution, preventing loosening under vibration in machinery, automotive, and electrical enclosure applications. The rounded head with one-way drive provides both aesthetic appeal and tamper-resistant security, making these screws ideal for permanent installations where maintenance access needs to be controlled.

Specification Summary & Compliance

Manufactured to exact inch system dimensions with Class 2A thread fit tolerance for consistent mating with standard nuts and threaded components. These screws conform to ASME B18.6.3 manufacturing specifications ensuring dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, making them suitable for global industrial supply chains and environmentally conscious manufacturing operations.