S-92432A456 1/4"-20 x 3/4" Set Screws

Key Features & Benefits at a Glance

• Enhanced Component Protection: The permanent swivel tip with a 7.5° maximum angle distributes pressure evenly, preventing damage to delicate shafts and components during high-torque tightening.
• Superior Corrosion Resistance: The black-oxide finish on alloy steel provides a durable barrier against rust and wear, extending the screw's service life in demanding industrial environments.
• High-Strength Fastening: With a Rockwell C45 hardness, this set screw maintains its form and clamping force under significant vibrational and load stresses.
• Secure and Reliable Locking: The UNC coarse thread profile ensures rapid installation and a strong, deep bite into the mating part for a vibration-resistant hold.
• Precision Fit for Consistent Performance: The Class 2A thread fit guarantees dimensional accuracy and ease of assembly, reducing the risk of cross-threading and ensuring repeatable results.
• Optimized for Confined Spaces: The headless, hex drive design allows for installation in recessed or limited-clearance applications where a standard bolt head would not fit.
• Compliant for Global Supply Chains: Meets RoHS 3 and REACH regulations, ensuring the screw is suitable for use in products marketed within strict international environmental and safety frameworks.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to solve critical challenges in power transmission and motion control systems. Its permanent swivel tip is a key differentiator, eliminating the need for separate thrust washers and preventing galling or indentation on precision-machined shafts, pulleys, and gears. The combination of UNC coarse threads and a Class 2A fit provides a robust, reliable grip that resists loosening under continuous vibration, making it an ideal set screw for couplings, collars, and handwheels. The headless hex drive design is crucial for applications with spatial constraints, ensuring a flush finish while the Rockwell C45 hardness guarantees the set screw will not deform, maintaining clamping force and operational integrity in demanding industrial settings.

Specification Summary & Compliance

This product adheres to the UNC thread standard with a precision Class 2A thread fit for consistent assembly. It is manufactured from high-strength alloy steel and meets critical industry regulations, including RoHS 3 (2015/863/EU) compliance with exemption 6(a)-I and is REACH (EC 1907/2006) compliant, ensuring it is free from the Substances of Very High Concern (SVHC) listed as of 06/10/2022.