S-91773A054 0-80 x 3/16" ASME B18.6.3 Stainless Steel Round Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high-stress conditions
• Precision thread engagement with Class 2A UNF fine threads ensuring secure fastening and vibration resistance
• Optimized drive efficiency through Phillips No. 0 drive design providing consistent torque transmission and reduced cam-out risk
• Full regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH requirements for global industrial applications
• Complete threading coverage along the 3/16" length for maximum grip and load distribution in thin materials
• Enhanced installation experience with rounded head profile reducing surface marring and improving aesthetic integration

Professional Applications & Engineering Value

These 0-80 UNF fine thread screws deliver critical performance advantages in precision assemblies where space constraints and material thickness demand reliable small-diameter fastening solutions. The combination of 18-8 stainless steel material and passivated surface treatment provides exceptional resistance to chemical exposure and atmospheric corrosion, making them ideal for electronic enclosures, medical devices, and instrumentation panels. The Phillips drive system ensures efficient installation in automated assembly processes, while the rounded head design minimizes protrusion in compact applications. Engineers specify these fully threaded machine screws for applications requiring consistent clamping force across the entire fastener length, particularly in sheet metal, plastic components, and precision machinery where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This precision fastener maintains Class 2A thread fit tolerance according to UNF standards, ensuring consistent engagement and reliable performance. Manufacturing conforms to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Regulatory compliance includes RoHS 3 (2015/863/EU) restriction of hazardous substances and REACH (EC 1907/2006) compliance for chemical safety, making these screws suitable for global industrial markets and environmentally conscious manufacturing operations.