S-91375A537 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 demanding environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- High-strength performance from alloy steel construction with Rockwell C45 hardness for heavy-duty applications
- Optimized installation torque through hex drive design providing secure, slip-resistant engagement
- Enhanced gripping capability with cup tip configuration for positive seating and minimal component damage
- Industry-standard compatibility with UNC coarse threads ensuring broad interchangeability across equipment
- Regulatory compliance assurance meeting ASME, ASTM, RoHS 3, and REACH standards for global supply chain integration
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering advantages for industrial equipment maintenance and manufacturing operations. The Class 3A thread fit provides exceptional dimensional accuracy for precision assemblies where vibration resistance is paramount. With UNC coarse threading and hex drive configuration, installers achieve optimal clamping force without stripping, while the cup tip design maximizes surface contact for secure component positioning. Ideal for securing gears, pulleys, and collars in machinery, automotive, and aerospace applications, this fastener's Rockwell C45 hardness ensures reliable performance under cyclic loading conditions where inferior fasteners would fail.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 and ASTM F912 specifications, this set screw maintains precise Class 3A thread tolerances with 1/4"-20 UNC coarse thread configuration. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring unrestricted use in global markets. Dimensional consistency is guaranteed with 1/2" length, 1/8" hex drive, and right-hand thread direction for standardized installation procedures across industrial applications.
