S-91771A917 0-80 x 3/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance under high-stress applications
• Precision thread engagement through Class 2A thread fit and UNF fine threading, providing secure fastening with reduced vibration loosening
• Optimized flush mounting with standard 100° countersink angle flat head design, creating smooth surface finishes in precision assemblies
• Efficient installation with Phillips No. 0 drive system, enabling quick and secure torque application during assembly operations
• Full-threaded coverage along the 3/16" length maximizes grip strength and distributes load evenly across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3 specifications while being RoHS 3 and REACH compliant for global market acceptance

Professional Applications & Engineering Value

These 0-80 UNF flat head screws deliver critical engineering solutions where space constraints and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for electronics enclosures, precision instruments, and marine applications. The fully threaded design ensures maximum holding power in thin materials, while the 100° countersink angle allows for perfect flush mounting in chamfered holes. With fine UNF threading and Class 2A thread fit, these machine screws prevent cross-threading and maintain precise alignment in vibration-prone environments. The combination of 80,000 psi tensile strength and controlled hardness makes them suitable for both permanent assemblies and applications requiring periodic maintenance access.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance according to UNF standards with precise 0-80 fine threading and right-hand thread direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance requirements. The product is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) standards for environmental and safety regulations, ensuring suitability for international industrial markets and sensitive applications.