S-95289A119 8-32 x 1/2" 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 environments and long-term reliability
- Maximum holding power achieved through Class 3A thread fit, ensuring tight, secure fastening with minimal backlash
- Enhanced torque transmission via 5/64" hex drive, allowing for easy installation with standard tools and reduced slippage
- Space-saving headless design for applications where flush mounting is critical, maintaining a clean profile
- Precision extended tip (0.086" length) for deeper engagement and improved resistance to vibration loosening
- High durability with Rockwell B80 hardness, providing excellent wear resistance and repeated use capability
- Broad compatibility with UNC coarse threads (8-32 size), simplifying sourcing and replacement in various assemblies
Professional Applications & Engineering Value
This 8-32 UNC set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for machinery, automotive, and outdoor equipment exposed to moisture or chemicals. Its headless design and extended tip ensure secure, flush mounting in collars, shafts, and pulleys, reducing the risk of unintended disassembly under high-vibration conditions. The Class 3A thread fit and coarse thread spacing provide reliable engagement in both soft and hard materials, enhancing assembly efficiency and reducing maintenance downtime in precision engineering applications.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 standards, ensuring dimensional accuracy and performance consistency. It features a Class 3A thread fit for precise tolerances and a right-hand UNC thread with 8-32 size. The extended tip maintains tight diameter and length tolerances (e.g., tip diameter: -0.006" to 0"). Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental safety and regulatory adherence for industrial use.
