S-94355A715 1/4"-28 x 1 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh or humid environments.
• Precise and secure fastening due to Class 3A thread fit, minimizing the risk of loosening under vibration.
• High-strength performance backed by a Rockwell B80 hardness rating for reliable load-bearing capability.
• Easy installation and removal with a 1/8" hex drive, allowing for high torque application in confined spaces.
• Excellent grip and minimal surface damage from the flat tip design, protecting valuable components.
• Wide industry acceptance as it meets the rigorous ASME B18.3 standard for dimensional consistency.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This 1/4"-28 UNF Class 3A set screw is engineered to solve critical challenges in precision assembly and machinery. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in marine, chemical processing, and food-grade equipment where environmental factors degrade ordinary fasteners. Its fine thread spacing and Class 3A thread fit ensure a tight, secure connection that resists vibrational loosening in dynamic systems like motor shafts, gear assemblies, and precision instruments. The headless and hex drive design allows for flush mounting and easy access in tight spaces, enhancing both the aesthetic and functional integrity of the final product. By incorporating a flat tip, it maximizes surface contact without marring components, preserving the lifespan of expensive parts. This set screw delivers reliable performance in demanding industrial set screw applications, from aerospace to automotive engineering, where failure is not an option.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF thread with a Class 3A thread fit for high precision and a 1-1/4" length. It is manufactured in accordance with ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in various global markets.