S-94105A352 1/4"-20 x 7/8" 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 holding power with Class 3A thread fit for precise, vibration-resistant assemblies in demanding applications
- Enhanced corrosion resistance from the black-oxide finish, extending service life in harsh industrial environments
- Exceptional durability provided by alloy steel construction and Rockwell C45 hardness, resisting wear and deformation
- Secure, flush installation with the headless design and flat tip, preventing protrusion and ensuring a clean finish
- Easy installation and high torque capability with the 1/8" hex drive, allowing for efficient assembly with standard tools
- Reliable performance in coarse-thread applications due to the 1/4"-20 UNC thread, ideal for quick assembly and disassembly
- Compliance with major industry standards including ASME B18.3, ensuring consistent quality and interchangeability
Professional Applications & Engineering Value
This 1/4"-20 UNC Class 3A set screw is engineered to address critical challenges in industrial assemblies, such as component slippage and corrosion-induced failure. Crafted from black-oxide alloy steel, it offers robust resistance to rust and wear, making it ideal for machinery, automotive, and construction applications where exposure to moisture and stress is common. The hex drive and flat tip design ensure secure, flush fastening, preventing movement in pulleys, gears, and collars. Its coarse UNC threads provide quick, reliable engagement, reducing installation time while maintaining high clamping force. By meeting ASME B18.3 specifications, this screw delivers consistent performance, minimizing downtime and enhancing the longevity of your equipment in heavy-duty set screw applications.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and a 1/4"-20 UNC coarse thread with a diameter of 0.25". It is manufactured in compliance with ASME B18.3 and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for industrial use.
