S-90289A624 3/8"-16 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 black-oxide coating, extending service life in harsh industrial environments
- Exceptional holding power from Rockwell C45 hardness, preventing deformation under high torque loads
- Precise thread engagement with Class 3A fit, ensuring reliable fastening without cross-threading
- Maximum torque transmission through 3/16" hex drive, allowing secure installation in confined spaces
- Enhanced grip security from cup point design, creating permanent seating on shafts and components
- Industry-standard compatibility with UNC coarse threads, facilitating quick assembly and replacement
- Headless space-saving design enabling flush mounting where protruding fasteners aren't feasible
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance in demanding applications where vibration resistance and permanent positioning are paramount. The cup point tip bites deeply into mating surfaces, preventing slippage in pulley systems, gear assemblies, and rotating machinery components. With UNC coarse threads and Class 3A fit, installation is streamlined while maintaining precise tolerances for high-vibration environments. The hex drive configuration provides superior torque capability compared to slotted designs, reducing stripping during high-force applications. Rockwell C45 hardness ensures the screw maintains its structural integrity under repeated stress cycles, making it ideal for heavy-duty industrial equipment, automotive components, and manufacturing machinery where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with 3/8"-16 UNC coarse threads maintaining Class 3A dimensional accuracy for premium fit. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global markets. The right-hand thread direction follows industry standards for consistent installation practices across applications.
