S-92991A131 5/16"-18 x 1 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 from high-quality brass construction, ideal for harsh industrial environments
- Exceptional holding power with Class 3A thread fit ensuring maximum engagement and vibration resistance
- Optimized installation efficiency through UNC coarse threading for faster assembly and reduced cross-threading risks
- Enhanced durability with Rockwell B55 hardness providing reliable performance under mechanical stress
- Secure fastening in confined spaces thanks to headless hex drive design with 5/32" drive size
- Positive component positioning via cup tip design that prevents slipping and maintains alignment
- Industry compliance assurance meeting ASME B18.3 standards for consistent quality and performance
Professional Applications & Engineering Value
This 5/16"-18 UNC brass set screw delivers critical engineering solutions where corrosion resistance and precision threading are paramount. The Class 3A thread fit provides exceptional tolerance control, eliminating play in assemblies subject to vibration while the coarse UNC threading enables rapid installation in production environments. The headless hex drive configuration with 5/32" drive size allows access to tight spaces where conventional fasteners cannot operate. Manufactured from brass with Rockwell B55 hardness, this set screw maintains structural integrity in electrical components, marine equipment, and plumbing systems where galvanic corrosion would compromise steel alternatives. The cup tip design ensures positive contact with shafts and collars, preventing rotational slippage in power transmission applications.
Specification Summary & Compliance
This precision set screw features 5/16"-18 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. The fastener complies with ASME B18.3 manufacturing specifications and demonstrates environmental responsibility through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance. With a total length of 1-1/4" and right-hand thread direction, this component meets rigorous industrial standards for reliability and performance.
