S-90289A720 1/2"-13 x 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 black-oxide coating on alloy steel, extending service life in demanding industrial environments
- Exceptional holding power achieved through Class 3A thread fit precision and serrated locking design for vibration-resistant fastening
- Optimized torque transmission via 1/4" hex drive in headless design, allowing high tightening force in confined spaces
- Reduced surface damage to components with cup tip design that distributes pressure evenly during clamping
- Enhanced durability from Rockwell C45 hardness, maintaining thread integrity under repeated adjustments
- Reliable coarse threading with 1/2"-13 UNC specification for quick assembly and reduced cross-threading risks
- Broad compatibility with standard UNC components and industrial equipment requiring 2" fastening length
Professional Applications & Engineering Value
Engineered for precision shaft positioning and component retention in high-vibration environments, this black-oxide alloy steel set screw solves critical industrial fastening challenges. The Class 3A thread fit ensures minimal backlash in assemblies requiring exact alignment, while the serrated locking mechanism prevents rotational slippage in pulleys, gears, and coupling systems. The cup tip design minimizes surface marring on expensive shafts and rotating components, making it ideal for precision machinery maintenance and manufacturing equipment where repeated adjustments are necessary. Its headless configuration with hex drive provides flush mounting in space-constrained applications while maintaining high torque capability.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread tolerance for precision fit. Features 1/2"-13 UNC coarse threads with right-hand direction and 2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The black-oxide surface treatment on alloy steel provides corrosion protection while maintaining dimensional stability.
