S-94105A578 5/16"-18 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, extending service life in demanding industrial environments
- Exceptional thread precision with Class 3A fit ensures secure, vibration-resistant fastening in critical assemblies
- High-strength alloy steel construction with Rockwell C45 hardness provides reliable performance under heavy loads
- Optimized hex drive design (5/32") enables efficient installation and removal with standard tools
- Coarse UNC threading delivers faster assembly and superior holding power in various materials
- Headless flat tip design allows flush mounting while maintaining maximum clamping force
- Full regulatory compliance with ASME, RoHS 3, and REACH standards ensures workplace safety and environmental responsibility
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value for industrial applications requiring precise component positioning and reliable torque transmission. The Class 3A thread fit with UNC coarse threading provides superior engagement in soft metals and plastics, while the hex drive design ensures consistent installation torque without cam-out issues. The headless configuration with flat tip creates secure, flush-mounted connections in pulleys, gears, and collars, preventing accidental disengagement in high-vibration environments. The combination of Rockwell C45 hardness and corrosion-resistant black-oxide finish makes these set screws ideal for automotive assemblies, machinery manufacturing, and precision equipment where dimensional stability and long-term reliability are critical.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC 5/16"-18 coarse thread spacing. Features include 1/2" length, 0.313" thread diameter, right-hand thread direction, and 5/32" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for safe and sustainable manufacturing practices.
