S-91375A808 5/8"-11 x 3 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 that protects against rust in demanding industrial environments
- Exceptional holding power through Class 3A thread fit precision, ensuring secure fastening in high-vibration applications
- Maximum torque transmission with 5/16" hex drive design that prevents tool slippage during installation
- Enhanced material strength from alloy steel construction with Rockwell C45 hardness for long-term durability
- Optimal penetration and grip through cup point tip design that creates permanent seating in shafts and collars
- Reliable coarse threading with 5/8"-11 UNC specification for quick installation and superior resistance to loosening
- Space-saving headless design allowing flush mounting where clearance is limited
Professional Applications & Engineering Value
This high-performance set screw addresses critical engineering challenges in industrial machinery and equipment assembly. The black-oxide alloy steel construction provides exceptional corrosion resistance while maintaining Rockwell C45 hardness for sustained performance under heavy loads. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in rotating assemblies and high-vibration environments. The cup point tip creates permanent dimples in shafts and collars, preventing axial movement in power transmission systems. Ideal for securing gears, pulleys, and couplings in manufacturing equipment, automotive systems, and heavy machinery where reliable positioning is critical to operational safety and efficiency.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance for precision applications. Features 5/8"-11 UNC coarse threads with right-hand direction and 3-1/2" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The black-oxide surface treatment on alloy steel substrate provides corrosion protection while maintaining dimensional stability across industrial temperature ranges.
