S-91781A151 6-32 x 3/4" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable, long-lasting fastening under demanding mechanical loads
• Standard 82° countersink angle provides flush mounting for clean, professional finishes in precision assemblies
• Class 2A thread fit with UNC coarse threading delivers smooth, secure engagement and easy installation
• Full threading along the 3/4" length maximizes grip and load distribution across the entire fastener
• Rockwell B80 hardness offers excellent durability and resistance to wear in repetitive applications
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global supply chains

Professional Applications & Engineering Value

This 6-32 UNC flat head slotted screw is engineered to address critical challenges in industrial assembly, where corrosion resistance, mechanical strength, and precision fit are paramount. The 18-8 stainless steel material combined with a passivated finish significantly reduces oxidation and chemical degradation, making it suitable for applications in marine, food processing, and outdoor equipment. The flat head design with an 82° countersink ensures a seamless, low-profile installation that minimizes protrusion and avoids interference in tight spaces. With coarse UNC threading and Class 2A fit, it provides rapid, secure fastening in metals and plastics, reducing assembly time while maintaining 80,000 psi tensile strength for high-stress environments. Fully threaded along its 3/4" length, it offers uniform clamping force, ideal for machinery, enclosures, and structural components requiring reliable, vibration-resistant connections.

Specification Summary & Compliance

This screw adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and performance consistency. Threading conforms to UNC coarse spacing with Class 2A fit for standard industrial tolerances. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.