S-92210A191 8-32 x 5/16" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Efficient installation with hex drive design providing positive torque transmission and reduced cam-out risk
• Flush mounting capability with standard 82° countersink angle for smooth surface finishes in assembled products
• Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
• Versatile thread coverage with fully threaded design offering consistent holding power across the entire fastener length

Professional Applications & Engineering Value

These 8-32 UNC flat head screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against chemical exposure and environmental degradation, making them ideal for machinery, electronic enclosures, and outdoor equipment. The Class 3A thread fit ensures precise tolerance control, eliminating loose connections in vibration-prone assemblies. With their hex drive design and coarse thread spacing, these screws enable rapid installation while maintaining high clamp force, significantly reducing assembly time in production environments. The flat head profile with standard 82° countersink allows for seamless integration into precision-machined components, creating clean, professional finishes while maintaining structural integrity.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with Class 3A thread fit per UNC specifications, ensuring precision engagement and reliable performance. These flat head screws comply with ASME B18.3 mechanical and dimensional requirements, guaranteeing interchangeability and consistent quality. The product meets stringent environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, confirming suitability for global markets and environmentally conscious manufacturing operations.