S-91857A190 8-32 x 1/4" ASME B18.6.3 Stainless Steel Round Head Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high-stress conditions
• Precision thread engagement through Class 2A thread fit and UNC coarse 8-32 threading, ensuring secure fastening and vibration resistance
• Full-threaded design provides maximum grip length and uniform load distribution across the entire fastener
• Easy installation and removal with standard slotted drive and rounded head profile, compatible with common hand tools
• Industry compliance assurance meeting ASME B18.6.3 specifications for dimensional accuracy and performance reliability
• Environmental regulation compliance with RoHS 3 and REACH standards, suitable for regulated industries and international markets

Professional Applications & Engineering Value

This 316 stainless steel rounded head slotted screw delivers critical performance advantages in demanding industrial applications where corrosion resistance and mechanical integrity are paramount. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making it ideal for chemical processing equipment, marine hardware, and food processing machinery where exposure to chlorides and acidic environments is common. The UNC coarse 8-32 thread design provides excellent engagement in various materials while resisting cross-threading during assembly. With fully threaded construction and Class 2A thread fit, these screws maintain consistent clamping force in vibration-prone applications, preventing loosening in machinery, electronic enclosures, and structural assemblies. The combination of 100,000 psi tensile strength and standardized dimensions ensures reliable performance in critical fastening applications across multiple industries.

Specification Summary & Compliance

This fastener features precision 8-32 UNC coarse threads with Class 2A thread fit tolerance for optimal engagement and assembly efficiency. Manufacturing complies with ASME B18.6.3 specifications, ensuring dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global markets and environmentally conscious applications. The right-hand thread direction and fully threaded design provide consistent fastening performance across the entire 1/4" length.