S-95235A543 5/16"-18 x 5/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Vibration-resistant secure locking with permanent nylon patch thread locker that maintains integrity up to 250°F, preventing loosening in high-stress environments
• Precision Class 3A external thread fit ensures tight, reliable engagement with mating parts for maximum holding power and reduced assembly play
• Exceptional durability from alloy steel construction with Rockwell C45 hardness, providing superior wear resistance and long service life in demanding applications
• Extended tip design creates deeper penetration and improved grip on shaft components, enhancing torque transmission and anti-rotation performance
• Standardized UNC coarse threads enable quick installation and superior resistance to cross-threading compared to fine thread alternatives
• Hex socket drive compatibility allows for high-torque installation using common 5/32" hex keys, facilitating efficient assembly in confined spaces
• Industry compliance assurance with ASME B18.3 specifications and environmental regulations including RoHS 3 and REACH for global industrial acceptance

Professional Applications & Engineering Value

This alloy steel set screw delivers critical engineering solutions for industrial applications where vibration-induced loosening compromises assembly integrity. The combination of Class 3A thread fit and permanent nylon patch thread locker creates a dual-security system that maintains clamping force in rotating equipment, machinery, and power transmission systems. The extended tip configuration provides enhanced biting action on shafts and collars, preventing relative movement under dynamic loads. Manufactured to ASME B18.3 standards with UNC coarse threads, this hex socket set screw offers reliable performance in automotive components, industrial gearboxes, and precision manufacturing equipment where consistent torque transmission and positional accuracy are paramount.

Specification Summary & Compliance

This set screw features precision 5/16"-18 UNC coarse threads with Class 3A external thread fit per ASME standards, ensuring dimensional accuracy and proper mating. The manufacturing process adheres to ASME B18.3 specifications where applicable, with material certification to ASTM F912. Environmental compliance includes full conformance with RoHS 3 (2015/863/EU) restrictions and REACH (EC 1907/2006) regulations regarding substance control. The component maintains Rockwell C45 hardness throughout for consistent mechanical performance across industrial applications.