S-91677A142 5/8"-11 x 1 1/2" Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Rockwell C32 hardness for reliable, long-term fastening in demanding applications
• Superior surface grip from the ball tip design and Rockwell C60 tip hardness, minimizing component slippage and damage
• Corrosion-resistant black-oxide finish on alloy steel for enhanced durability in various industrial environments
• Easy and secure installation with a standard 5/16" hex drive and coarse UNC threads for quick assembly
• Precise thread fit (Class 2A) ensures consistent performance and compatibility with standard UNC nuts and tapped holes
• Compact, headless design allows for flush mounting in space-constrained assemblies
• Compliant with major regulations including RoHS 3 and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 5/8"-11 UNC set screw is engineered to solve critical challenges in power transmission and motion control systems. The black-oxide alloy steel construction provides excellent resistance to rust and wear, making it ideal for industrial applications exposed to moisture or friction. The ball tip, hardened to Rockwell C60, concentrates force to create a secure, permanent lock on shafts, gears, and collars without gouging the component surface. Combined with coarse UNC threads and a Class 2A thread fit, it offers vibration resistance and maintains clamping force under dynamic loads, preventing costly downtime in machinery and equipment.

Specification Summary & Compliance

This set screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from alloy steel and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances and suitable for global industrial use.