S-92778A127 1/4"-20 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional holding power achieved through Class 3A thread fit for maximum assembly security
• High-strength performance with Rockwell B80 hardness rating ensuring long-term reliability
• Secure installation via hex drive design that prevents cam-out during high-torque applications
• Precise component positioning with oval tip design that minimizes surface damage
• Industry-standard compatibility with UNC coarse threads for easy integration into existing assemblies
• Space-saving headless design allowing flush mounting in confined spaces

Professional Applications & Engineering Value

This 1/4"-20 UNC Class 3A set screw delivers critical engineering solutions for industrial applications requiring precise component fixation. The 18-8 stainless steel construction provides excellent corrosion resistance in demanding environments, while the Rockwell B80 hardness ensures the fastener maintains its structural integrity under vibration and load. The headless hex drive configuration allows for compact installations where space is limited, and the oval tip design distributes pressure evenly to prevent damage to shaft surfaces. These set screws are particularly valuable in machinery assembly, automotive components, and precision equipment where right-hand coarse threads provide reliable, vibration-resistant fastening solutions that withstand operational stresses.

Specification Summary & Compliance

This set screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufactured in compliance with ASME B18.3 specifications, the fastener meets rigorous engineering standards. Environmental compliance is assured through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, making it suitable for regulated industrial applications worldwide.