S-92991A146 1/2"-13 x 3/8" ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance from brass construction, ideal for humid or corrosive industrial environments.
- Exceptional thread engagement and holding power with the coarse 1/2"-13 UNC thread and precise Class 3A fit.
- Secure, flush-mount installation thanks to the headless design and positive-grip 1/4" hex drive.
- Reliable, non-slip fastening provided by the cup point tip, which bites into the shaft for a permanent lock.
- Enhanced durability and wear resistance from a Rockwell B55 hardness rating for long service life.
- Guaranteed quality and interchangeability through compliance with the stringent ASME B18.3 standard.
- Safe for use in regulated industries as it is fully RoHS 3 and REACH compliant.
Professional Applications & Engineering Value
This brass set screw is engineered to solve critical challenges in assembly and maintenance. Its headless design and cup point create a secure, low-profile connection that prevents components like gears, pulleys, and collars from slipping on shafts. The 1/2"-13 UNC coarse thread ensures rapid installation and high resistance to vibrational loosening, while the Class 3A fit provides superior accuracy for demanding applications. Made from brass, it offers inherent corrosion resistance, making it a top choice for machinery in marine, plumbing, and electrical systems where rust is a concern. The 1/4" hex drive allows for high-torque installation with standard tools, ensuring a reliable and permanent set in your most critical assemblies.
Specification Summary & Compliance
This set screw features a 1/2"-13 UNC coarse thread with a Class 3A thread fit, ensuring high precision and interchangeability. It is manufactured to meet the dimensional and mechanical requirements of the ASME B18.3 specification. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances for safe use in various industrial markets.
