S-92311A101 4-40 x 1/16" 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, ideal for harsh environments and extended service life
- Exceptional holding power provided by the cup point tip design, which bites into shafts for secure, permanent positioning
- Precise, reliable installation ensured by the Class 3A thread fit, offering tighter tolerances for high-vibration applications
- High-strength durability from Rockwell B80 hardness, resisting wear and deformation under load
- Easy, secure drive engagement with the internal hex drive (0.050"), allowing for high torque application without slippage
- Broad industrial compatibility with UNC coarse threads (4-40), facilitating quick assembly and disassembly
- Regulatory peace of mind through compliance with ASME B18.3, RoHS 3, and REACH standards
Professional Applications & Engineering Value
This 4-40 UNC set screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for applications in manufacturing, automotive, and electronics where environmental factors are a concern. The cup point design concentrates force on a small area, creating a deep indentation in the mating part to prevent axial movement and slippage—solving common issues of component loosening in high-vibration environments. Combined with the Class 3A thread fit and hex headless configuration, it ensures a flush, secure fit in tight spaces, offering reliable performance in collars, pulleys, and gears. This set screw delivers consistent, repeatable clamping force, reducing maintenance needs and enhancing the longevity of assembled components.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy and features a 4-40 UNC coarse thread with right-hand direction. It is manufactured in compliance with the ASME B18.3 standard and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006).
