S-95235A621 1/2"-13 x 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with integrated nylon patch thread locker that maintains locking strength up to 250°F (121°C)
• Superior thread engagement and precision through Class 3A external thread fit for reliable assembly in high-vibration applications
• Exceptional durability and wear resistance from alloy steel construction with Rockwell C45 hardness rating
• Secure installation and removal with 1/4" hex drive design that prevents tool slippage under high torque
• Enhanced gripping capability thanks to extended tip design that increases surface contact and prevents component slippage
• Industry-standard compatibility with UNC coarse threading (1/2"-13) for broad application across industrial equipment
• Long-term reliability through compliance with ASME B18.3 specifications and environmental regulations

Professional Applications & Engineering Value

This alloy steel set screw with permanent nylon patch thread locker addresses critical challenges in industrial applications where vibration-induced loosening compromises equipment safety and performance. The Class 3A thread fit ensures precise engagement with mating components, while the extended tip provides superior biting action into shaft surfaces. Engineered for high-temperature environments up to 250°F, this hex drive set screw maintains its locking capability in demanding applications such as power transmission systems, rotating assemblies, and precision machinery. The Rockwell C45 hardness combined with UNC coarse threading delivers optimal strength and installation efficiency, making it ideal for permanent positioning applications where disassembly is infrequent but reliability is paramount.

Specification Summary & Compliance

This set screw features precision Class 3A external thread fit with 1/2"-13 UNC coarse threads and right-hand direction. Manufacturing complies with ASME B18.3 specifications where applicable. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for environmental safety. Thread locking performance is maintained up to 250°F maximum temperature with the integrated nylon patch system.