S-91440A203 8-32 x 1 1/2" ASME B18.6.3 Steel Round Head Combination Phillips/Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable, vibration-resistant fastening
• Versatile installation options with combined Phillips/Slotted drive, accommodating various tool types without stripping
• Optimized thread engagement through full threading and Class 2A fit, ensuring consistent clamping force and reduced assembly time
• Enhanced grip surface with rounded head design, providing comfortable manual handling and reduced tool slippage
• Broad compatibility with UNC coarse thread profile, enabling quick installation in various materials without pre-tapping
• Regulatory confidence with full compliance to ASME B18.6.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

These 8-32 UNC coarse thread screws deliver critical performance advantages for industrial assembly applications where vibration resistance and long-term reliability are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and outdoor equipment, while the 60,000 psi tensile strength ensures joints maintain integrity under dynamic loads. The combination of Phillips/Slotted drive offers maintenance flexibility across different service scenarios, and the fully threaded design maximizes contact surface for superior pull-out resistance in sheet metal, plastics, and wood substrates. Engineered to prevent loosening in high-vibration environments, these rounded head screws solve common fastening failure points in manufacturing, automotive, and construction applications.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent engagement. Thread specifications conform to UNC coarse thread profile (8-32 size) with right-hand direction. Full compliance with ASME B18.6.3 manufacturing standards ensures dimensional accuracy and performance reliability. Environmental compliance verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restricted substance adherence for global market acceptance.