S-92845A110 4-40 x 3/16" 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior thread engagement and vibration resistance due to Class 3A thread fit for reliable, long-term fastening
- Enhanced holding power and component alignment from the extended tip design, preventing loosening under stress
- High mechanical strength and durability with a Rockwell B80 hardness, suitable for demanding applications
- Secure installation in confined spaces using the headless hex drive (0.050"), allowing flush mounting
- Wide compatibility and easy assembly with standard 4-40 UNC coarse threads and right-hand direction
- Compliance with major industry and environmental standards including ASME B18.3, RoHS 3, and REACH
Professional Applications & Engineering Value
This 4-40 UNC set screw is engineered to address critical challenges in precision assemblies, such as securing collars, gears, and pulleys on shafts without protruding heads. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for applications in machinery, automotive, and electronics exposed to moisture or chemicals. Its headless hex drive and extended tip ensure maximum contact and clamping force, reducing the risk of slippage and component misalignment in high-vibration environments. By utilizing a Class 3A thread fit and coarse UNC threads, this screw provides faster installation and reliable performance in industrial settings, enhancing overall equipment longevity and reducing maintenance needs.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threads (4-40 size) with a thread diameter of 0.112". It meets ASME B18.3 specifications for consistency and reliability, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability in industrial use.
