S-93445A525 5/16"-18 x 3/8" 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 from the cup point tip that bites into surfaces, preventing component slippage under high vibration
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash for reliable assemblies
- High-strength durability with Rockwell B80 hardness, providing excellent resistance to wear and deformation
- Easy installation and removal using the 5/32" hex drive, allowing for high torque application in confined spaces
- Reliable coarse UNC threading offers quick assembly and reduced cross-threading risk in industrial applications
- Full regulatory compliance with ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met
Professional Applications & Engineering Value
This 5/16"-18 UNC Class 3A set screw is engineered to address critical challenges in machinery and equipment assembly, where vibration resistance and secure positioning are paramount. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for outdoor, marine, or chemically exposed environments. Its headless hex drive and cup point tip design allow for deep seating and maximum grip on shafts, collars, and pulleys, preventing rotational movement in high-torque applications. The coarse thread and Class 3A fit ensure quick, accurate installation with reduced risk of stripping, ideal for production lines requiring speed and reliability. Commonly used in automotive, aerospace, and manufacturing sectors, this screw delivers consistent performance where precision and durability are non-negotiable.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with UNC coarse threads and a precise Class 3A thread fit for superior dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for hazardous substances.
