S-90778A533 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 316 stainless steel construction, ideal for harsh environments and extended service life
- Maximum holding power and vibration resistance ensured by the Class 3A thread fit for secure, reliable fastening
- Easy installation and high torque capability with the 5/32" hex drive, preventing tool slippage and damage
- Excellent penetration and seating provided by the 90° cone point, creating a firm grip on the mating surface
- Enhanced durability and wear resistance from Rockwell B80 hardness, reducing deformation under stress
- Wide compatibility and reliable performance with UNC coarse threading and right-hand direction for common industrial uses
- Compliance with strict industry and environmental standards, including ASME B18.3, RoHS, and REACH, ensuring safety and regulatory adherence
Professional Applications & Engineering Value
This 5/16"-18 UNC set screw in 316 stainless steel is engineered to address critical challenges in industrial assembly, such as component slippage and corrosion-induced failure. The headless design with a hex drive allows for flush mounting in tight spaces, while the coarse thread spacing and Class 3A thread fit deliver superior clamping force and vibration resistance, preventing loosening in high-stress applications like machinery, automotive, and marine equipment. The 90° cone point ensures deep penetration into shafts or hubs, providing a secure lock without damaging components. Its Rockwell B80 hardness and corrosion-resistant material make it a reliable choice for demanding environments, reducing maintenance needs and enhancing operational longevity.
Specification Summary & Compliance
This set screw features precise Class 3A thread fit per UNC standards, with a thread size of 5/16"-18, coarse spacing, and right-hand direction. It complies with ASME B18.3 manufacturing specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring high-quality, safe, and eco-friendly performance for industrial use.
