S-91790A201 8-32 x 1 1/4" ASME B18.6.3 Stainless Steel Slotted Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction with passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 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 easy installation
• Enhanced aesthetic integration through standard oval head profile that sits flush with surfaces while providing slotted drive convenience
• Full-threaded design maximizing grip length and distribution of clamping force across the entire 1-1/4" length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
• Optimized for industrial durability with right-hand threading and 82° countersink angle for stable, vibration-resistant assemblies

Professional Applications & Engineering Value

This 8-32 UNC oval head slotted screw delivers critical performance advantages in demanding applications where both mechanical integrity and corrosion resistance are paramount. The 18-8 stainless steel composition, enhanced by passivated finish, provides exceptional protection against oxidation and chemical exposure in manufacturing, marine, and food processing equipment. The fully threaded design with coarse UNC threads ensures maximum thread engagement in various materials, reducing the risk of stripping while maintaining consistent clamping force. The oval head profile combines aesthetic appeal with functional performance, sitting flush with surfaces while the slotted drive accommodates standard installation tools. These engineered features make it ideal for machinery assembly, electrical enclosures, and structural components where ASME B18.6.3 compliance and long-term reliability are essential requirements.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards, this oval head screw features precision UNC coarse threads with Class 2A fit for consistent dimensional accuracy and reliable performance. The fastener maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. With complete threading along the 1-1/4" length and standardized 82° countersink angle, this screw delivers predictable installation characteristics and secure fastening across various material types.