S-91794A581 5/16"-18 x 3/4" ASME B18.6.3 Stainless Steel Fillister Head Slotted 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 delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized head design featuring a high, narrow fillister profile for enhanced tool clearance and professional appearance
• Full threading capability providing consistent grip along the entire 3/4" length for uniform clamping force
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Versatile installation with right-hand thread direction and slotted drive for compatibility with standard tools

Professional Applications & Engineering Value

This 5/16"-18 UNC rounded fillister head slotted screw delivers critical engineering advantages in demanding applications. The 18-8 stainless steel composition combined with passivated finish provides exceptional resistance to corrosion and chemical exposure, making it ideal for food processing equipment, marine components, and outdoor machinery. The high, narrow fillister head profile offers superior clearance for tools and components while maintaining a low-profile appearance. With Class 2A thread fit and coarse threading, installation is streamlined while ensuring reliable performance in high-vibration environments. These fully threaded screws distribute clamping force evenly, preventing joint failure in assembly lines, electrical enclosures, and precision manufacturing equipment where ASME B18.6.3 compliance is mandatory.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications (5/16"-18). Complies with ASME B18.6.3 manufacturing standards for slotted head screws. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements. Features consistent 70,000 psi tensile strength and Rockwell B55 hardness throughout the fully threaded 3/4" length with 0.313" thread diameter and right-hand thread direction.