S-92311A109 4-40 x 7/16" 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 corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
- Precise thread engagement through Class 3A thread fit ensuring secure fastening and vibration resistance
- Maximum torque transmission with 0.050" hex drive design preventing tool slippage during installation
- Enhanced holding power featuring cup tip design that creates positive seating on shaft surfaces
- Exceptional durability with Rockwell B80 hardness maintaining structural integrity under stress
- Industry-standard compatibility with UNC coarse threads and 4-40 size for broad application use
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards
Professional Applications & Engineering Value
These 4-40 UNC set screws deliver critical engineering solutions where space constraints demand headless fasteners with reliable performance. The 18-8 stainless steel composition provides excellent corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The Class 3A thread fit ensures precise engagement in precision assemblies, preventing loosening from vibration in motors, gearboxes, and precision instruments. The cup tip design creates concentrated contact pressure on shafts and collars, eliminating slippage in power transmission applications. With coarse thread spacing and right-hand threading, these industrial set screws offer quick installation and removal while maintaining the holding strength required for permanent positioning applications across manufacturing, automotive, and aerospace sectors.
Specification Summary & Compliance
This 4-40 UNC set screw features precise Class 3A thread fit tolerances with 0.112" thread diameter and 7/16" length. Manufactured to ASME B18.3 specifications with hex drive (0.050") and cup tip configuration. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.
