S-92505A861 5/8"-18 x 1 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide coating that protects against rust in demanding industrial environments
• Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
• Enhanced torque transmission through 5/16" hex drive design that prevents stripping and enables high tightening forces
• Optimized grip performance with extended tip design that provides deeper penetration and superior holding power
• Long-term durability from Rockwell C45 hardened alloy steel that maintains integrity under heavy loads
• Fine thread advantage with UNF 18 TPI spacing offering better tension control and reduced loosening risk
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations for global applications

Professional Applications & Engineering Value

This black oxide alloy steel set screw delivers exceptional performance in demanding industrial settings where vibration resistance and precise positioning are critical. The Class 3A thread fit provides superior dimensional accuracy that prevents backlash in precision machinery, while the extended tip design ensures maximum contact surface for secure component fixation. Engineered with Rockwell C45 hardness, these headless set screws maintain their structural integrity under repetitive stress cycles, making them ideal for permanent installations in automotive assemblies, heavy equipment manufacturing, and precision instrument applications. The fine UNF threading offers enhanced clamping force distribution, significantly reducing the risk of joint failure in high-vibration environments where standard fasteners might loosen over time.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with precision Class 3A thread fit tolerances ensuring reliable performance. Features 5/8"-18 UNF fine threading with right-hand direction and headless hex drive configuration. The extended tip maintains tight diameter tolerance of -0.012" to 0" and length tolerance of -0.005" to 0" for consistent application performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these set screws suitable for global industrial applications requiring strict regulatory adherence.