S-92991A650 1/2"-13 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with brass construction, ideal for harsh environments and reducing maintenance costs
• Exceptional thread engagement and holding power from Class 3A fit coarse UNC threading, minimizing the risk of loosening under vibration
• High-torque installation capability with a 1/4" hex drive, allowing for secure tightening in confined spaces
• Enhanced component protection due to the cup tip design, which minimizes surface marring on the contacted part
• Reliable mechanical strength provided by Rockwell B55 hardness, ensuring durability and repeated usability
• Guaranteed dimensional consistency and performance through compliance with the ASME B18.3 standard
• Safe for use in regulated industries as it is fully compliant with RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

This 1/2"-13 UNC brass set screw is engineered to address common challenges in precision assembly and machinery. Its headless design with a hex drive is critical for applications where space is limited and a flush surface is required. The Class 3A thread fit and coarse threading provide superior resistance to vibrational loosening, a common failure point in dynamic industrial equipment. Manufactured from brass, it offers inherent corrosion resistance, making it a dependable choice for use in electrical components, marine hardware, and plumbing systems where exposure to moisture is a concern. The cup tip concentrates force effectively, providing excellent grip without causing significant damage to shafts or gears, thereby preserving the integrity of expensive components and reducing long-term wear.

Specification Summary & Compliance

This set screw features a 1/2"-13 UNC coarse thread with a precision Class 3A thread fit for reliable performance. It is manufactured to meet the dimensional and mechanical requirements of the ASME B18.3 specification. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it adheres to strict environmental and safety standards for hazardous substances.