S-92991A111 2-56 x 1/8" 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 from brass construction, ideal for harsh environments and electrical applications where rust prevention is critical
- Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant fastening in precision assemblies
- High torque transmission capability through .035" hex drive design prevents stripping and enables secure installation
- Enhanced material durability with Rockwell B55 hardness maintains structural integrity under repeated use
- Optimized for secure positioning with cup tip design that provides positive locking without damaging shaft surfaces
- Wide industry compatibility through UNC coarse threading that facilitates quick assembly and disassembly
- Comprehensive regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global market acceptance
Professional Applications & Engineering Value
This brass set screw delivers critical performance advantages in precision mechanical systems where corrosion resistance and electrical conductivity are paramount. The UNC coarse thread profile with Class 3A thread fit provides exceptional dimensional stability, eliminating play in sensitive instrumentation and preventing loosening under vibration. The headless design with hex drive enables flush mounting in confined spaces while maintaining high torque capability. Engineers specify this fastener for electrical components, precision machinery, and marine applications where the combination of brass material properties and precise thread spacing ensures long-term reliability without galvanic corrosion concerns.
Specification Summary & Compliance
This 2-56 UNC set screw features precise Class 3A thread fit tolerances per ASME B18.3 specifications, ensuring consistent performance across production runs. The 1/8" length and 0.086" thread diameter maintain dimensional accuracy for reliable installation. Manufacturing complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations, making this component suitable for global supply chains and environmentally conscious manufacturing operations.
