S-99934A140 2-56 x 1/8" 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 thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional holding power and precision fit with Class 3A thread fit, minimizing backlash and ensuring reliable fastening
- High durability and wear resistance provided by Rockwell B80 hardness, extending service life under mechanical stress
- Secure and efficient installation with the 0.035" hex drive, preventing cam-out and enabling high torque application
- Optimized for high-vibration applications due to the coarse UNC thread and right-hand direction, maintaining tight connections
- Space-saving headless design allows for flush mounting in confined assemblies without protruding components
- Soft silver tip protects mating surfaces from damage while providing enhanced grip on shafts or components
Professional Applications & Engineering Value
This 2-56 UNC set screw is engineered to address critical challenges in precision assemblies, such as shaft collars, pulleys, and gears, where reliable positioning is essential. The 18-8 Stainless Steel material offers excellent resistance to rust and oxidation, making it suitable for outdoor, marine, or chemically exposed settings. Its Class 3A thread fit and coarse thread spacing ensure rapid installation and superior resistance to loosening under dynamic loads. The hex drive design allows for high torque application without slippage, while the headless and soft silver tip features prevent damage to adjacent parts, providing a secure, non-marring fastening solution for machinery, automotive, and electronics industries.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. The UNC thread with Class 3A fit provides tight tolerances for precision assemblies. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions adherence for global industrial use.
