S-90289A833 3/4"-10 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments.
• Exceptional holding power provided by the Class 3A thread fit, ensuring a precise, secure, and vibration-resistant connection.
• High-strength durability from Rockwell C45 hardened alloy steel, preventing stripping and deformation under heavy loads.
• Enhanced locking capability with serrations and a cup tip design, which bite into the mating surface to prevent loosening.
• Easy installation and high torque application using the internal 3/8" hex socket drive and headless design for flush mounting in tight spaces.
• Reliable performance in coarse-thread applications with the 3/4"-10 UNC thread, ideal for quick assembly and disassembly in heavy-duty machinery.
• Guaranteed quality and safety through compliance with ASME B18.3 standards and environmental regulations like RoHS 3 and REACH.

Professional Applications & Engineering Value

This 3/4"-10 UNC set screw is engineered to solve critical challenges in industrial assembly and heavy machinery, where vibration-induced loosening and component misalignment are common issues. The black-oxide alloy steel construction provides a robust barrier against rust and wear, essential for long-term reliability in harsh conditions. Its Class 3A thread fit ensures tight tolerances, minimizing backlash and maintaining alignment in precision equipment. The combination of a hex socket drive and headless design allows for secure installation in confined spaces, while the cup tip and serrations create a permanent lock by embedding into the shaft, preventing rotational slip. Ideal for securing gears, pulleys, and collars, this set screw delivers consistent performance in automotive, aerospace, and manufacturing applications, reducing maintenance downtime and enhancing operational safety.

Specification Summary & Compliance

This set screw adheres to strict dimensional and performance criteria, featuring a 3/4"-10 UNC coarse thread with a Class 3A thread fit for high precision. It is manufactured in accordance with the ASME B18.3 standard, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in environmentally sensitive applications without hazardous substances.