S-93445A427 1/4"-20 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 vibration resistance with serrated locking design that prevents loosening under dynamic loads
- Exceptional corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
- Precise thread engagement with Class 3A fit ensuring consistent, reliable fastening in critical applications
- Optimized torque transmission through hex drive design allowing for secure installation without head protrusion
- Enhanced surface contact with cup tip configuration that minimizes component damage during clamping
- Consistent mechanical performance with Rockwell B80 hardness providing reliable strength and durability
- Broad industry compatibility meeting ASME B18.3 standards for seamless integration into existing assemblies
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and corrosion protection are critical. The 18-8 stainless steel construction combined with serrated locking technology addresses common failure points in machinery, automotive, and precision equipment assemblies. The hex headless design enables flush mounting in confined spaces while maintaining high torque capability. With coarse UNC threads and Class 3A fit, this fastener ensures rapid installation and reliable performance in high-stress environments, making it ideal for permanent positioning applications where maintenance access is limited. The cup tip design provides superior gripping power without damaging shaft surfaces, preserving component integrity.
Specification Summary & Compliance
This precision set screw features 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and consistent performance. Manufactured to ASME B18.3 specifications, the fastener ensures interchangeability and reliability across industrial applications. The product is fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, meeting the latest industry standards for hazardous substance restrictions and chemical safety.
