S-91658A198 5/8"-11 x 1 1/2" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 304 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Enhanced holding power through Class 2A thread fit and coarse UNC threading, providing secure fastening in high-vibration applications
• Optimized installation efficiency with 5/16" hex drive design, allowing for quick tool engagement and consistent torque application
• Reduced component damage thanks to the ball point tip design, distributing pressure evenly while maintaining Rockwell C30 hardness
• Reliable material consistency with matching 304 stainless steel tip material, preventing galvanic corrosion and ensuring uniform performance
• Environmental compliance assurance meeting RoHS 3 and REACH standards, making it suitable for regulated industries worldwide
• Precision dimensional control with 0.625" thread diameter and 1-1/2" length, ensuring proper fit and function in demanding assemblies

Professional Applications & Engineering Value

This 5/8"-11 UNC set screw delivers exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The 304 stainless steel construction provides excellent durability against moisture, chemicals, and temperature variations, while the coarse thread design ensures rapid installation and superior holding power in soft materials or high-stress environments. The ball point tip minimizes surface marring and distributes clamping force effectively, making it ideal for precision machinery, automotive components, and manufacturing equipment where repeated adjustments are necessary. The headless hex design allows for flush mounting in confined spaces, while maintaining the structural integrity needed for permanent or semi-permanent fastening solutions in demanding industrial settings.

Specification Summary & Compliance

This precision fastener features Class 2A thread fit per UNC standards with 0.625" thread diameter and coarse 11 TPI spacing. Manufactured to exact dimensional tolerances, the set screw maintains Rockwell C30 hardness throughout both body and tip components. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Right-hand threading follows industry-standard installation practices for consistent performance in various assembly applications.