S-92991A127 1/4"-28 x 1/4" 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 with brass construction, ideal for harsh environments and electrical applications
- Precise, vibration-resistant locking ensured by the Class 3A thread fit and fine UNF threading for secure fastening
- High durability and deformation resistance provided by Rockwell B55 hardness, maintaining performance under load
- Secure, flush installation with the headless and cup tip design, preventing component protrusion and slippage
- Easy installation and high torque application enabled by the 1/8" hex drive, suitable for confined spaces
- Reliable right-hand thread engagement for standard assembly processes, ensuring consistent performance
- Compliance with global standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and quality
Professional Applications & Engineering Value
This brass set screw is engineered to address common industrial challenges, such as corrosion in moist or chemical-rich environments, thanks to its non-magnetic and rust-resistant brass material. The 1/4"-28 UNF fine thread and Class 3A thread fit provide exceptional clamping force and vibration resistance, making it ideal for precision assemblies in machinery, electronics, and automotive systems where loosening could lead to failures. The cup tip design concentrates pressure for secure shaft or component positioning without damage, while the headless and hex drive style allows for seamless integration in tight spaces. By meeting ASME B18.3 standards and environmental regulations, it ensures long-term reliability and reduces maintenance needs in demanding applications.
Specification Summary & Compliance
This set screw features a Class 3A thread fit for high precision and a 1/4"-28 UNF fine thread with right-hand direction, adhering to ASME B18.3 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the use of safe, environmentally responsible materials in industrial and commercial assemblies.
