S-97654A305 5/16"-18 x 3/4" Stainless Steel Flanged Button Head Hex-Drive 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 B70 hardness for reliable, heavy-duty applications
• Precision thread engagement with Class 3A thread fit ensuring secure, vibration-resistant fastening in critical assemblies
• Enhanced installation efficiency through 3/16" hex drive and flanged design, eliminating the need for separate washers
• Optimized load distribution with wide rounded button head and flange diameter of 0.688" for increased surface contact
• Full-threaded design providing consistent gripping power along the entire 3/4" length for maximum holding strength
• Regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 5/16"-18 UNC stainless steel rounded head screw addresses critical fastening challenges in machinery, structural assemblies, and outdoor equipment. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against corrosion, oxidation, and chemical exposure, significantly extending service life in challenging environments. The Class 3A thread fit with coarse UNC threading ensures rapid installation and superior vibration resistance, while the flanged hex drive design simplifies assembly and reduces installation time. With its 70,000 psi tensile strength and fully threaded construction, this fastener delivers reliable performance in high-stress applications where joint integrity is paramount.

Specification Summary & Compliance

This industrial fastener features precision 5/16"-18 UNC coarse threading with Class 3A thread fit for exceptional dimensional accuracy. Manufacturing adheres to inch system standards with complete threading along the 3/4" length. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for global industrial applications.