S-92311A571 1/4"-28 x 2" 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, ideal for harsh environments and long-term reliability.
- Exceptional thread precision with Class 3A fit and UNF fine threads, ensuring tight, secure, and vibration-resistant connections.
- High-strength durability backed by Rockwell B80 hardness, providing reliable performance in demanding applications.
- Secure, non-slip fastening via the hex drive and cup tip design, offering excellent torque transmission and component grip.
- Space-saving headless design allows for flush mounting in tight spaces without compromising on holding power.
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.
- Optimized for precision assembly with a 2" length and right-hand thread, facilitating easy installation and consistent performance.
Professional Applications & Engineering Value
Engineered for precision and endurance, this 1/4"-28 UNF Class 3A set screw is crafted from 18-8 Stainless Steel to combat corrosion and wear in industrial settings. Its fine thread spacing and Class 3A thread fit deliver superior clamping force and vibration resistance, critical for machinery, automotive, and aerospace assemblies where loosening can lead to failure. The headless hex drive and cup tip enable secure, flush fastening in confined spaces, while the Rockwell B80 hardness ensures it withstands heavy loads. Ideal for securing gears, pulleys, and collars, this screw addresses common issues of slippage and corrosion, enhancing assembly longevity and reliability.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit tolerances and UNF fine thread standards with a 1/4"-28 thread size. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory adherence. Dimensions include a 2" length, 1/8" hex drive, and right-hand thread direction, providing precise, reliable fastening in inch-based systems.
