S-94355A614 1/4"-28 x 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, ideal for harsh environments and long-term reliability.
- Precise, secure fastening thanks to Class 3A thread fit, minimizing backlash and ensuring vibration resistance in critical assemblies.
- High torque capability and flush installation from the hex drive and headless design, allowing for tight spaces and clean profiles.
- Excellent mechanical strength with Rockwell B80 hardness, providing durability against wear and deformation under load.
- Reliable fine thread engagement with 1/4"-28 UNF threading, offering improved adjustment precision and holding power.
- Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met for global supply chains.
- Flat tip design for concentrated clamping force, reducing component damage and improving grip on shafts and collars.
Professional Applications & Engineering Value
This 1/4"-28 UNF Class 3A set screw is engineered to address common industrial challenges such as component slippage, corrosion-induced failure, and assembly space constraints. Made from 18-8 stainless steel, it offers exceptional resistance to rust and chemicals, making it suitable for applications in machinery, automotive, and electronics where exposure to moisture or contaminants is a concern. The hex headless design with a 1/8" hex drive allows for easy installation in confined areas, while the fine thread spacing and Class 3A thread fit ensure tight tolerances and reliable performance in high-vibration environments. Its flat tip provides firm contact, preventing rotation in precision assemblies like couplings and pulleys, thereby enhancing operational safety and reducing maintenance needs.
Specification Summary & Compliance
This set screw features a 1/4"-28 UNF fine thread with Class 3A fit for high precision, a length of 1/2", and a flat tip design. It complies with ASME B18.3 manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to strict environmental and safety regulations.
