S-92311A350 1/4"-28 x 2 1/2" 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, ensuring long-term reliability in harsh environments.
- Maximum holding power provided by the cup point tip design, which bites into surfaces to prevent component slippage.
- Precise alignment and secure fastening thanks to the Class 3A thread fit, offering tighter tolerances for critical applications.
- Easy installation and removal with the 1/8" hex drive, allowing efficient tool access in confined spaces.
- Enhanced durability from Rockwell B80 hardness, resisting wear and deformation under heavy loads.
- Reliable performance in fine-thread applications with the 1/4"-28 UNF right-hand thread, ideal for precise adjustments.
- Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
This 1/4"-28 UNF Class 3A set screw is engineered to address common industrial challenges like misalignment and loosening in high-vibration settings. Made from 18-8 stainless steel, it resists rust and corrosion, making it suitable for outdoor, marine, and chemical processing equipment. The hex headless design with a cup point ensures a firm grip on shafts and collars, preventing rotational movement without protruding parts. Its fine thread spacing and right-hand thread direction allow for precise torque control in assemblies requiring minimal play, such as machinery, automotive components, and precision instruments. By combining Rockwell B80 hardness with a compact 1/8" hex drive, it delivers easy installation and long-term reliability, reducing maintenance downtime in demanding industrial applications.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit tolerances for high precision, conforming to ASME B18.3 standards. It features a UNF fine thread with a diameter of 0.25" and length of 2 1/2", ensuring consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity.
