S-91410A791 5/8"-11 x 2 1/4" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Maximum torque transmission through external square drive design for secure installation and removal in demanding applications
• Superior durability with Rockwell B80 hardness steel construction resisting deformation under heavy loads
• Reliable coarse thread engagement with UNC 5/8"-11 configuration providing faster installation and reduced cross-threading risk
• Precision Class 2A thread fit ensuring consistent performance and compatibility with standard mating components
• Secure locking capability with cup tip design that creates positive contact points on shaft surfaces
• Industry-standard compliance meeting ASME B18.6.2 specifications for dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

This square head set screw delivers exceptional performance in industrial settings where high torque requirements and secure fastening are critical. The steel construction with Rockwell B80 hardness provides the necessary strength to withstand vibrational forces and heavy loads common in machinery assembly, automotive components, and manufacturing equipment. The external square drive design allows for maximum torque application without stripping, while the UNC coarse threads enable quick installation and disassembly in maintenance operations. The cup tip configuration ensures positive biting action on shaft surfaces, preventing slippage in pulley systems, gear assemblies, and coupling applications. Engineered to ASME B18.6.2 standards, this fastener delivers consistent performance across industrial applications where reliability cannot be compromised.

Specification Summary & Compliance

This 5/8"-11 UNC square head set screw features precise Class 2A thread fit tolerances with coarse thread spacing for optimal performance. The fastener is manufactured to exact ASME B18.6.2 specifications ensuring dimensional accuracy and mechanical properties. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and safe use in various industrial sectors. The product maintains consistent thread diameter of 0.625" with right-hand thread direction and 2 1/4" length for standardized applications.