S-92311A354 1/4"-28 x 3" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High-strength, precision threads with Class 3A fit ensure secure, vibration-resistant fastening in critical assemblies.
• Enhanced torque transmission via the 1/8" hex drive, allowing for easy installation and removal with standard tools.
• Reliable grip and minimal surface damage from the cup tip design, providing consistent clamping force.
• Excellent durability with Rockwell B80 hardness, maintaining performance under mechanical stress.
• Wide industrial compatibility due to UNF fine thread spacing, perfect for precision equipment and adjustments.
• Compliance with major standards including ASME B18.3, ensuring consistent quality and safety.

Professional Applications & Engineering Value

This 18-8 stainless steel set screw is engineered to address common industrial challenges such as loosening under vibration and corrosion in demanding environments. The Class 3A UNF fine thread provides a tight, precise fit, reducing the risk of backlash in machinery and precision instruments. Its headless hex drive design allows for flush mounting in confined spaces, while the cup tip ensures minimal marring on shafts or components. Ideal for applications in automotive, aerospace, and manufacturing, this screw offers reliable performance where high-strength fastening and corrosion resistance are critical, supported by compliance with RoHS and REACH for environmental safety.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and UNF fine thread spacing for accurate engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances. The inch-based dimensions, including a 1/4"-28 thread size and 3" length, guarantee interoperability in standard industrial systems.