S-95235A537 1/4"-20 x 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent nylon patch that maintains secure fastening up to 250°F, preventing loosening in high-stress applications
• Precision thread engagement through Class 3A external thread fit ensuring reliable mating with tapped holes and consistent clamping force
• Superior material strength from alloy steel construction with Rockwell C45 hardness for exceptional durability and wear resistance
• Enhanced gripping capability with extended tip design that provides increased surface contact and prevents component slippage
• Industry-standard compatibility with UNC coarse thread profile (1/4"-20) for broad interchangeability across equipment and machinery
• Secure installation control via hex drive (1/8") that allows high torque application without stripping in confined spaces
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This alloy steel set screw delivers critical vibration resistance in demanding industrial applications where component security is paramount. The permanent nylon patch thread locker creates consistent friction that prevents back-out under cyclic loading, making it ideal for power transmission components, rotating assemblies, and precision machinery. The extended tip design concentrates clamping force on a smaller surface area, providing superior resistance to rotational forces in shaft collars, gears, and pulleys. Engineered with Class 3A thread fit and UNC coarse threads, this fastener ensures reliable installation in both soft and hard materials while maintaining positional accuracy in industrial equipment and manufacturing systems.

Specification Summary & Compliance

This 1/4"-20 UNC set screw features precision Class 3A external thread fit with coarse thread spacing for optimal engagement. Manufactured to ASME B18.3 specifications with extended tip dimensions (0.156" diameter, 0.067" length) held to tight tolerances. The component meets Rockwell C45 hardness standards and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring both mechanical performance and regulatory adherence for global industrial applications.