S-90289A188 8-32 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 with black-oxide coating for extended service life in demanding industrial environments
- Exceptional holding power through Class 3A thread precision and serrated locking mechanism preventing component slippage
- Optimized installation efficiency with 5/64" hex drive design allowing high-torque application in confined spaces
- Enhanced material durability from alloy steel construction with Rockwell C45 hardness for repeated use without deformation
- Reliable fastening performance through UNC coarse threads ensuring quick assembly and vibration resistance
- Secure component positioning via cup tip design that concentrates contact pressure for permanent alignment
- Broad compatibility with standard 8-32 threaded components across machinery and equipment applications
Professional Applications & Engineering Value
This 8-32 UNC set screw delivers critical fastening reliability for industrial assemblies where vibration resistance and permanent positioning are paramount. The black-oxide alloy steel construction provides essential corrosion protection while maintaining Rockwell C45 hardness to withstand high stress applications. Engineered with Class 3A thread fit and coarse UNC threading, it ensures rapid installation and maintains clamping force in pulleys, gears, and collars. The combination of serrations locking and cup tip design creates irreversible fastening that prevents rotational slip in power transmission systems and precision machinery. These features make it ideal for manufacturing equipment, automotive components, and industrial machinery where headless hex drive configuration enables flush mounting in space-constrained applications.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC coarse thread spacing. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features right-hand thread direction with 0.164" thread diameter and 1/8" length dimensions.
