S-92311A564 1/4"-28 x 1" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Exceptional holding power ensured by the Class 3A thread fit, providing a precise, tight, and vibration-resistant connection.
• Enhanced torque transmission via the 1/8" hex drive, allowing for secure installation with standard tools.
• Reliable component positioning thanks to the cup point tip, which bites into the mating surface to prevent loosening.
• Optimized for fine adjustments with UNF fine thread spacing, offering better tension control in precision assemblies.
• Long-term durability supported by Rockwell B80 hardness, balancing strength and resistance to wear.
• Broad industry compliance meeting ASME B18.3 standards, RoHS 3, and REACH for safe, global use.

Professional Applications & Engineering Value

This 1/4"-28 UNF Class 3A set screw is engineered to address critical challenges in machinery and equipment assembly, where vibration resistance and secure fastening are paramount. The 18-8 stainless steel material offers excellent corrosion resistance, reducing maintenance in humid or chemical-exposed settings like automotive or marine applications. The cup point design digs into shafts or hubs, preventing slippage under dynamic loads, while the fine thread spacing allows for precise clamping force distribution. Its headless and hex drive style facilitates installation in confined spaces, making it a reliable choice for industrial set screws in couplings, gears, and precision instruments, ensuring long-term operational integrity.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for high precision in UNF fine threads, with a thread size of 1/4"-28 and length of 1". It conforms to ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and reliability for industrial use.