S-92991A188 8-32 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 with brass construction for long-lasting performance in harsh industrial environments
- Precise Class 3A thread fit ensures tight, secure fastening with minimal vibration loosening in critical assemblies
- Hex drive design (5/64") provides excellent torque transmission and prevents tool slippage during installation
- Cup tip configuration creates positive seating and superior grip on shaft components without damaging surfaces
- Rockwell B55 hardness rating delivers optimal balance of strength and machinability for repeated use
- Headless design allows for flush mounting in applications where protruding fasteners are not feasible
- Comprehensive regulatory compliance meets ASME B18.3 standards and environmental regulations for global acceptance
Professional Applications & Engineering Value
This 8-32 UNC brass set screw addresses critical engineering challenges in precision assembly applications where corrosion resistance and reliable positioning are paramount. The Class 3A thread fit provides exceptional dimensional accuracy for secure fastening in components requiring repeated adjustment or disassembly. The brass material offers inherent corrosion resistance ideal for marine, electrical, and plumbing applications where exposure to moisture or chemicals is common. The combination of hex drive and cup tip design ensures maximum torque application and positive seating on shafts, pulleys, and gears without creating stress concentrations that could lead to component failure. These headless set screws are particularly valuable in confined spaces where traditional fasteners cannot be accommodated.
Specification Summary & Compliance
This inch-system fastener features 8-32 UNC coarse threads with Class 3A thread fit for precision dimensional control. Manufacturing complies with ASME B18.3 specifications for consistent quality and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and global market acceptance.
