S-92949A191 8-32 x 5/16" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ensuring longevity in harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Precise thread engagement with Class 3A UNC coarse threads providing secure fastening and vibration resistance
• Optimized drive efficiency through 3/32" hex drive design enabling high-torque installation without stripping
• Streamlined installation with fully threaded design and rounded button head profile for smooth assembly operations
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
• Versatile application compatibility with standard 8-32 thread size and 5/16" length fitting common industrial equipment requirements

Professional Applications & Engineering Value

This 8-32 UNC rounded head screw delivers critical engineering solutions for industrial applications where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition combined with passivated finish provides exceptional protection against chemical exposure and environmental degradation, making it ideal for manufacturing equipment, machinery assemblies, and outdoor installations. The Class 3A thread fit ensures precise tolerance control, eliminating loose connections in vibration-prone environments. The hex drive design allows for high-torque installation without cam-out, while the rounded button head offers a low-profile finish that reduces snagging hazards. These features collectively address common industrial pain points including fastener failure, maintenance downtime, and compliance challenges in regulated industries.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit precision for superior engagement. The UNC coarse thread pattern (8-32) ensures reliable performance in various materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to international standards for hazardous substance restrictions. Dimensions include 5/16" length, 0.312" head diameter, and 3/32" hex drive size, maintaining consistent quality across production batches for industrial fastener applications.