S-94105A537 1/4"-20 x 1/2" ASME B18.3, ASTM F912 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 harsh industrial environments
- Exceptional holding power achieved through Class 3A thread fit precision and Rockwell C45 hardness
- Secure installation and removal with hex drive design preventing tool slippage during high-torque applications
- Reliable performance in high-vibration applications due to coarse UNC thread spacing maintaining grip under dynamic loads
- Industry-standard compatibility with 1/4"-20 UNC threading ensuring seamless integration with existing components
- Headless design advantage providing flush mounting in space-constrained assemblies without protruding hardware
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards for global industrial use
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for industrial applications requiring permanent fastening under extreme conditions. The Class 3A thread fit ensures zero backlash in precision assemblies, while the Rockwell C45 hardness maintains dimensional stability under repetitive stress. The hex drive configuration enables high-torque installation in confined spaces, making it ideal for securing gears, pulleys, and collars on rotating shafts. The coarse UNC threading provides superior resistance to vibrational loosening in machinery, automotive, and manufacturing equipment. Combined with corrosion-resistant black-oxide treatment, this set screw offers long-term reliability in demanding environments where maintenance access is limited.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and 1/4"-20 UNC coarse threading. The black-oxide alloy steel construction meets Rockwell C45 hardness standards for optimal strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications.
