S-90289A582 5/16"-18 x 3/4" 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 black-oxide coating, extending service life in demanding industrial environments.
- Exceptional holding power provided by Class 3A thread fit, ensuring precise, vibration-resistant assemblies.
- High-strength durability from Rockwell C45 hardened alloy steel, resisting deformation under heavy loads.
- Secure locking capability with serrations under the head, preventing loosening in high-vibration applications.
- Easy installation and removal using the 5/32" hex drive, allowing for efficient maintenance in confined spaces.
- Reliable component positioning with the cup tip design, offering concentrated contact pressure for secure shaft retention.
- Broad industry compatibility through UNC coarse threads, facilitating quick assembly and disassembly.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in mechanical systems where vibration resistance and secure fastening are paramount. The UNC coarse thread design ensures rapid installation and high clamp force, ideal for securing gears, pulleys, and collars on rotating shafts in industrial machinery. The headless construction with a hex drive allows for flush mounting in space-constrained applications, while the serrations provide additional locking force to prevent back-off under dynamic loads. Manufactured from hardened alloy steel with a protective black-oxide finish, it delivers reliable performance in automotive, aerospace, and heavy equipment assemblies, reducing maintenance frequency and downtime.
Specification Summary & Compliance
This set screw features a 5/16"-18 UNC Class 3A thread with coarse spacing, ensuring tight tolerances for precise fit. It meets ASME B18.3 manufacturing specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.
