S-90289A160 6-40 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, extending service life in demanding industrial environments
- Exceptional holding power through serrated locking mechanism that prevents loosening under vibration
- Precise Class 3A thread fit ensures tight tolerances and reliable fastening in critical applications
- High-strength performance with Rockwell C45 hardness for durable, long-lasting fastening solutions
- Space-saving headless design allows for flush mounting where clearance is limited
- Secure installation with 1/16" hex drive that provides positive torque control during assembly
- Enhanced grip surface from cup tip design that minimizes component damage while maximizing holding force
Professional Applications & Engineering Value
This 6-40 UNF Class 3A set screw delivers exceptional engineering value in precision assembly applications where vibration resistance and space constraints are critical concerns. The Black-Oxide Alloy Steel construction provides superior corrosion protection while maintaining the high strength required for industrial machinery, automotive components, and electronic enclosures. The serrated locking mechanism effectively counters rotational forces in high-vibration environments, eliminating the need for additional locking devices. With its headless design and compact 1/8" length, this fastener is ideal for applications requiring flush mounting in confined spaces. The fine thread spacing and Class 3A thread fit ensure precise engagement in tapped holes, making it particularly valuable for precision equipment, calibration devices, and sensitive instrumentation where movement must be absolutely prevented.
Specification Summary & Compliance
This set screw features precision 6-40 UNF fine threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufactured in compliance with ASME B18.3 specifications for set screws, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial applications and environmentally conscious manufacturing processes.
