S-92311A356 5/16"-18 x 2 1/4" 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-lasting performance in harsh industrial environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- Optimized torque transmission through hex drive design allowing high installation force without stripping
- Enhanced gripping power with cup point tip design providing maximum bite and resistance to rotational forces
- Consistent mechanical properties with Rockwell B80 hardness maintaining structural integrity under heavy loads
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards for global applications
- Space-saving installation with headless design allowing flush mounting in confined assembly spaces
Professional Applications & Engineering Value
This 5/16"-18 UNC Class 3A set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and corrosion protection are critical. The 18-8 stainless steel composition provides superior durability against chemical exposure and moisture, while the coarse UNC thread profile ensures rapid installation and reliable holding power in machinery, automotive components, and precision equipment. The cup point tip creates permanent seating in shafts and collars, preventing slippage under rotational stress. With hex drive compatibility and headless design, engineers can achieve secure fastening in space-constrained assemblies without compromising accessibility or torque capability.
Specification Summary & Compliance
This set screw maintains Class 3A thread tolerance for precision fit and meets ASME B18.3 manufacturing specifications. The UNC coarse thread (5/16"-18) provides optimal engagement in various materials, while the 2-1/4" length accommodates standard industrial applications. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures safe use across global markets, with material hardness certified at Rockwell B80 for consistent mechanical performance.
