S-91375A543 1/4"-20 x 1 1/8" ASME B18.3, ASTM F912 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
- Exceptional holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications.
- Superior corrosion resistance due to black-oxide coating on alloy steel, extending service life in harsh industrial environments.
- High-strength durability with Rockwell C45 hardness, ensuring reliable performance under heavy loads and repeated use.
- Easy installation and removal using a 1/8" hex drive, allowing for efficient assembly and maintenance with standard tools.
- Enhanced grip and alignment from the cup tip design, minimizing component slippage and improving positioning accuracy.
- Wide compatibility with 1/4"-20 UNC coarse threads, suitable for various machinery and equipment requiring right-hand threading.
- Regulatory peace of mind by meeting ASME B18.3, RoHS 3, and REACH standards, ensuring safety and environmental compliance.
Professional Applications & Engineering Value
This 1/4"-20 UNC set screw is engineered to address common industrial challenges like loosening under vibration and corrosion in harsh settings. Crafted from black-oxide alloy steel, it offers robust resistance to wear and environmental factors, making it ideal for machinery, automotive assemblies, and precision equipment. The headless design and hex drive facilitate compact installations where space is limited, while the cup tip ensures a firm bite into shafts or components, preventing rotational slip. With coarse threads and Class 3A fit, it provides quick, reliable fastening that reduces maintenance downtime, delivering long-term value in industrial applications demanding high performance and compliance.
Specification Summary & Compliance
This set screw adheres to precise Class 3A thread fit per UNC standards, ensuring tight tolerances for optimal performance. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity.
