S-91375A298 12-28 x 3/8" ASME B18.3, ASTM F912 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 Alloy Steel, extending service life in harsh industrial environments.
- Exceptional holding power due to Rockwell C45 hardness, preventing deformation under high stress.
- Precise and secure fastening with Class 3A thread fit, minimizing backlash and ensuring reliable connections.
- Easy installation in confined spaces using the 3/32" hex drive and headless design.
- Enhanced grip and minimal surface damage from the cup tip, ideal for repeated adjustments.
- Reliable performance in fine-thread applications with 12-28 UNF threads, offering superior vibration resistance.
- Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards.
Professional Applications & Engineering Value
This 12-28 UNF Class 3A set screw is engineered for demanding applications where precision and durability are critical. The Black-Oxide Alloy Steel construction provides excellent corrosion resistance, reducing maintenance in moisture-prone or outdoor settings. Its fine thread and Class 3A fit deliver tight tolerances, essential for minimizing loosening in high-vibration machinery like motors, conveyor systems, and automotive assemblies. The cup tip design ensures a firm grip on shafts and collars without causing significant surface marring, making it perfect for adjustable components. With a Rockwell C45 hardness, it withstands heavy loads and repeated use, while the headless and hex drive features allow easy access in compact spaces, streamlining assembly and disassembly processes in industrial maintenance and manufacturing.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy under the UNF thread standard, with a thread diameter of 0.216" and fine spacing. It meets ASME B18.3 manufacturing specifications, ensuring consistent quality and performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial use.
