S-91781A193 8-32 x 7/16" ASME B18.6.3 Stainless Steel Slotted Flat Head 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
• High mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimal flush mounting featuring standard flat head profile with 82° countersink angle for seamless surface integration
• Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
• Regulatory compliance meeting ASME B18.6.3 manufacturing standards for consistent quality and dimensional accuracy
• Environmental responsibility through RoHS 3 and REACH compliance, ensuring safe use in regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 8-32 UNC flat head slotted screws solve critical fastening challenges where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition combined with passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for machinery, electrical enclosures, and marine equipment. The fully threaded design with Class 2A thread fit ensures maximum thread engagement and prevents loosening under vibration, while the standardized 82° countersink angle allows for flush installation in precision assemblies. These machine screws deliver reliable performance in automotive, aerospace, and industrial manufacturing applications where consistent fastening and regulatory compliance are essential.

Specification Summary & Compliance

This flat head slotted screw features precise dimensional specifications including 0.164" thread diameter, 7/16" length, and Class 2A thread fit per UNC standards. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring suitability for global industrial markets and environmentally conscious applications.