S-95289A151 5/16"-18 x 1" 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 due to the extended tip design, ensuring secure fastening and reduced loosening under vibration
- Precise thread engagement with Class 3A fit for tight tolerances, minimizing backlash and improving assembly accuracy
- Easy installation and removal using the 5/32" hex drive, allowing for high torque application without stripping
- High mechanical strength from Rockwell B80 hardness, providing reliable performance under heavy loads
- Broad compatibility with coarse UNC threads, facilitating quick assembly in various industrial applications
- Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This 18-8 stainless steel set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Its headless design and extended tip provide deep penetration into shafts and collars, creating a permanent lock that resists rotational forces in machinery, automotive, and aerospace assemblies. The UNC coarse thread and Class 3A fit ensure rapid installation with minimal cross-threading risks, while the hex drive allows for high torque in confined spaces. Made from corrosion-resistant stainless steel, it excels in moist or chemical-exposed environments, reducing maintenance needs and enhancing the longevity of precision equipment.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with a 5/16"-18 UNC Class 3A thread ensuring precise dimensional accuracy and interchangeability. The extended tip features a diameter of 0.203" and length of 0.164" with tight tolerances for consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material reliability in industrial applications.
