S-91771A187 8-36 x 1/4" 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 for extended service life in demanding environments
• Exceptional mechanical strength with 80,000 psi tensile strength to withstand high-stress applications without failure
• Precision thread engagement with Class 2A UNF fine threads ensuring secure, vibration-resistant fastening
• Optimal flush mounting with standard 82° countersink angle for seamless surface integration and clean aesthetics
• Enhanced drive stability through Phillips No. 2 drive design providing reliable torque transfer during installation
• Full thread coverage along the entire 1/4" length for maximum grip strength and load distribution
• Regulatory compliance assurance meeting both industry standards and environmental regulations for global project suitability

Professional Applications & Engineering Value

These 8-36 UNF flat head screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and environmental factors, while the UNF fine thread configuration ensures superior holding power in thin materials and vibration-prone environments. The fully threaded design maximizes engagement surface area, distributing mechanical loads evenly across fastened components. With their 82° countersink angle and Phillips drive system, these screws enable rapid, flush-mount installation in precision machinery, electronic enclosures, and automotive assemblies where space constraints and aesthetic requirements demand reliable, low-profile fastening solutions.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances ensuring consistent dimensional accuracy. The right-hand UNF fine threads (8-36) provide precise engagement characteristics, while the mechanical properties include 80,000 psi tensile strength for reliable performance under load. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees suitability for international industrial applications requiring strict material restrictions.