S-92845A744 1/4"-28 x 1" 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise, secure fastening ensured by Class 3A thread fit for minimal backlash and reliable performance
- Enhanced torque transmission via 1/8" hex drive, reducing tool slippage and damage during installation
- Deep, positive engagement with extended tip design (0.156" diameter) for improved grip on shafts and components
- High mechanical strength from Rockwell B80 hardness, providing excellent durability under load
- Reliable fine thread spacing (UNF) for finer adjustments and vibration resistance in precision assemblies
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This 1/4"-28 UNF Class 3A set screw is engineered to address critical challenges in industrial settings, such as component slippage and corrosion-induced failure. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, making it suitable for machinery, automotive, and marine applications. The extended tip and fine thread spacing provide a deeper bite into materials, preventing loosening under vibration—common in motors, pulleys, and rotating equipment. Its headless design allows for flush mounting in confined spaces, while the hex drive ensures easy installation with standard tools. By combining precise thread fit and robust construction, this screw enhances assembly reliability, reduces maintenance needs, and supports long-term operational efficiency in demanding environments.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for high precision and tight tolerances, with a UNF fine thread size of 1/4"-28. It meets ASME B18.3 manufacturing specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial applications.
