S-92785A544 1/4"-28 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring longevity in harsh industrial environments.
• Exceptional holding power from the 90° cone point design, which bites into surfaces for secure, vibration-resistant fastening.
• Precise thread engagement with Class 3A fit and UNF fine threads, providing tighter tolerances and reduced risk of loosening under stress.
• High mechanical strength backed by Rockwell B80 hardness, offering reliable performance in high-torque applications.
• Easy installation and removal using a standard 1/8" hex key, facilitated by the headless design for flush mounting in confined spaces.
• Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability in professional settings.
• Environmental and safety assurance through RoHS 3 and REACH compliance, making it suitable for regulated industries.

Professional Applications & Engineering Value

This 1/4"-28 UNF set screw is engineered to address common industrial challenges such as component slippage and vibration-induced failures. Made from 18-8 stainless steel, it resists rust and corrosion, making it ideal for applications in machinery, automotive assemblies, and outdoor equipment where exposure to moisture is a concern. The fine thread and Class 3A thread fit ensure minimal backlash and superior clamping force, critical for precision instruments and rotating parts. The hex headless design allows for seamless integration into tight spaces, while the 90° cone point provides aggressive gripping on shafts and collars, preventing axial movement. Its compliance with ASME B18.3 guarantees reliability in demanding industrial set screw applications, offering engineers a trusted solution for secure fastening.

Specification Summary & Compliance

This set screw features a 1/4"-28 UNF thread with Class 3A thread fit for high precision and a 3/4" length. It includes a right-hand thread direction, 1/8" hex drive, and 90° cone point tip. Manufactured to meet ASME B18.3 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to global standards.