S-92308A538 1/4"-20 x 5/8" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Superior torque transmission with external square drive and square head design for secure tool engagement and reduced stripping
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long-lasting performance in harsh environments
• Reliable holding power with Rockwell B80 hardness ensuring consistent strength and resistance to deformation
• Quick installation using coarse UNC threads and Class 2A fit for faster assembly in industrial applications
• Secure fastening with cup tip design that concentrates pressure and prevents component slippage
• Industry compliance meeting ASME B18.6.2 specifications for dimensional accuracy and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

This 1/4"-20 UNC square head set screw delivers exceptional engineering value in demanding industrial applications where corrosion resistance and high torque transmission are critical. The 18-8 stainless steel construction provides superior protection against rust and chemical exposure, making it ideal for machinery, manufacturing equipment, and outdoor applications. The external square drive and square head design ensure maximum torque application without cam-out, while the coarse thread configuration enables rapid installation in production environments. The cup tip concentrates clamping force effectively, preventing shaft movement in pulley systems, collars, and gear assemblies. Engineered to ASME B18.6.2 standards, this set screw maintains dimensional precision for consistent performance across industrial fastening applications.

Specification Summary & Compliance

This square head set screw features 1/4"-20 UNC coarse threads with Class 2A thread fit for standard industrial applications. The fastener maintains dimensional compliance with ASME B18.6.2 specifications and demonstrates environmental responsibility through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance. Manufactured from 18-8 stainless steel with Rockwell B80 hardness, the set screw measures 5/8" in length with right-hand thread direction and cup tip configuration for secure fastening performance.