S-92311A544 1/4"-20 x 1 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Exceptional holding power provided by Class 3A thread fit, delivering tighter tolerances for secure, vibration-resistant fastening.
• Easy installation and removal with the 1/8" hex drive, allowing efficient tool access in confined spaces.
• Enhanced grip and minimal surface damage from the cup tip design, ideal for repeated adjustments without compromising components.
• High durability and strength backed by Rockwell B80 hardness, resisting wear and deformation under heavy loads.
• Reliable performance in industrial settings due to coarse UNC threads, enabling quick assembly and reduced cross-threading risks.
• Compliance with major standards including ASME B18.3, ensuring consistent quality and interoperability in machinery and equipment.

Professional Applications & Engineering Value

This 1/4-20 UNC Class 3A set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Crafted from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for applications in manufacturing, automotive, and outdoor equipment where exposure to moisture or chemicals is a concern. The headless design and hex drive allow for flush mounting and easy torque application in tight spaces, while the cup tip provides concentrated pressure to prevent loosening under vibration. Its coarse thread and Class 3A fit ensure rapid installation and high clamping force, reducing downtime in assembly lines. Ideal for securing gears, pulleys, and shafts, this set screw delivers reliable, long-lasting performance in heavy-duty fastening scenarios, enhancing overall machinery efficiency and safety.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including UNC thread type with a Class 3A thread fit for superior accuracy and minimal backlash. It meets ASME B18.3 specifications for consistent manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and consumer applications.