S-92991A542 1/4"-20 x 1" 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 durable brass construction for long-lasting performance in demanding environments
- Precise thread engagement with Class 3A fit ensuring reliable fastening and vibration resistance
- High torque capability through 1/8" hex drive design for secure installation and removal
- Enhanced holding power with cup tip design that creates positive seating and prevents component slippage
- Optimized strength-to-weight ratio with Rockwell B55 hardness providing excellent mechanical properties
- Wide compatibility with UNC coarse thread profile matching standard industrial components
- Space-saving design as a headless set screw ideal for confined applications
Professional Applications & Engineering Value
This 1/4-20 UNC brass set screw delivers exceptional engineering value for precision assembly applications where corrosion resistance and reliable fastening are critical. The Class 3A thread fit provides tighter tolerances than standard fasteners, ensuring secure connections in vibrating machinery and precision equipment. The cup tip design creates concentrated pressure points that prevent shaft slippage in pulley systems, gears, and collars. Manufactured from brass material with Rockwell B55 hardness, this set screw offers excellent resistance to galvanic corrosion while maintaining sufficient strength for industrial applications. The headless configuration with 1/8" hex drive allows for installation in space-constrained environments common in machinery, automotive components, and electronic enclosures where flush mounting is required.
Specification Summary & Compliance
This set screw features precise 1/4"-20 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. The fastener meets ASME B18.3 manufacturing specifications ensuring consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material restrictions adherence for global industrial applications.
