S-91772A161 6-32 x 2 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh environments and extended service life
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under load
• Optimized drive engagement featuring a Phillips No. 2 drive for efficient installation and reduced cam-out risk
• Secure coarse thread fit with UNC Class 2A threading ensuring vibration resistance and stable fastening
• Versatile partial threading allowing unthreaded shank sections for precise alignment and shear strength
• Broad compliance coverage meeting ASME B18.6.3 dimensional standards and environmental regulations (RoHS 3, REACH)
• Durable pan head design with rounded profile providing a low-profile, flush finish and increased bearing surface

Professional Applications & Engineering Value

These 6-32 UNC coarse thread pan head screws deliver critical reliability in demanding industrial applications where corrosion resistance and mechanical integrity are paramount. The passivated 18-8 stainless steel material effectively resists oxidation and chemical exposure, making these fasteners suitable for outdoor equipment, marine components, food processing machinery, and electronic enclosures. The coarse UNC threading ensures rapid assembly and maintains grip in materials prone to vibration loosening, while the partially threaded design enhances shear strength and prevents cross-threading. Combined with a Phillips No. 2 drive, these screws offer efficient installation with standard tools, reducing assembly time and improving production line efficiency for OEMs and maintenance teams.

Specification Summary & Compliance

Manufactured to precise ASME B18.6.3 specifications, these screws maintain Class 2A thread fit tolerances for consistent performance. The 2 1/2" length and 6-32 UNC coarse thread provide standardized compatibility across industrial assemblies. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensures environmental safety and regulatory acceptance for global supply chains.