S-95289A136 1/4"-20 x 5/16" 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 for longevity in harsh environments
- Exceptional holding power ensured by Class 3A thread fit for minimal backlash and secure fastening
- Enhanced grip and alignment from the extended tip design, improving component positioning
- High torque application capability with 1/8" hex drive, allowing for secure installation in confined spaces
- Reliable mechanical strength due to Rockwell B80 hardness, resisting deformation under load
- Wide industrial compatibility with UNC coarse threads for quick assembly and disassembly
- Regulatory compliance assurance meeting ASME B18.3, RoHS, and REACH standards for safe global use
Professional Applications & Engineering Value
This 1/4-20 UNC Class 3A set screw is engineered to address critical challenges in industrial settings, such as component slippage and corrosion-induced failure. Crafted from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it ideal for machinery, automotive, and marine applications. The extended tip provides deeper penetration into shafts or hubs, enhancing grip and reducing the risk of loosening under vibration. With a hex headless design and 1/8" hex drive, it allows for easy installation in tight spaces while maintaining high torque transfer. The coarse thread spacing and right-hand thread ensure quick, reliable fastening, supporting efficient maintenance and assembly processes in demanding environments.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC thread type with a 1/4"-20 size. It meets ASME B18.3 specifications for consistency and performance, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The extended tip features a length of 0.134" with tight tolerances for reliable application.
