S-91794A098 3-48 x 5/8" 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
• High tensile strength of 70,000 psi ensures reliable, long-lasting fastening in demanding applications
• Precision Class 2A thread fit provides smooth installation and secure engagement with mating components
• Fully threaded design offers maximum grip length and uniform stress distribution along the entire fastener
• Slotted fillister head with high narrow profile allows for easy installation in confined spaces while maintaining tool engagement
• Coarse UNC threading enables quick assembly and reduced cross-threading risk in production environments
• Compliance with ASME B18.6.3 and environmental regulations ensures quality consistency and regulatory acceptance

Professional Applications & Engineering Value

These 18-8 stainless steel rounded head screws with 3-48 UNC coarse threading deliver exceptional performance in industrial settings where corrosion resistance and mechanical strength are critical. The passivated finish significantly enhances surface protection against chemical exposure and oxidation, extending service life in manufacturing equipment, electrical enclosures, and machinery assemblies. The high narrow fillister head profile combined with slotted drive design provides optimal clearance in tight spaces while maintaining positive tool engagement. With fully threaded construction and Class 2A thread fit, these fasteners ensure consistent clamping force and vibration resistance, addressing common challenges of loosening under dynamic loads. The combination of 70,000 psi tensile strength and Rockwell B55 hardness makes them suitable for applications requiring reliable fastening under substantial mechanical stress while maintaining dimensional stability.

Specification Summary & Compliance

This 5/8" length screw features precision 3-48 UNC coarse threads with Class 2A thread fit tolerances, ensuring consistent performance and interchangeability. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and quality assurance. The fastener meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) compliance regarding chemical safety, making it suitable for global industrial applications with stringent environmental requirements.