S-91416A550 1/4"-20 x 2" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Rockwell C45 hardness alloy steel construction that resists wear and deformation in demanding applications
• Reliable installation and removal thanks to the external square drive and square head design that prevents cam-out under high torque
• Optimized for quick assembly with coarse UNC threads and Class 2A fit, ensuring smooth engagement and reduced cross-threading risks
• Exceptional durability in high-vibration environments due to the cup point tip that digs into surfaces for a secure, permanent lock
• Broad industrial compatibility with a 2" length and 1/4"-20 thread size, making it ideal for adjusting components and securing collars on shafts
• Compliance with rigorous standards including ASME B18.6.2, ensuring consistent quality and dimensional accuracy for engineering projects
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances

Professional Applications & Engineering Value

This alloy steel set screw is engineered to address common industrial challenges such as component slippage and fastener failure under stress. The UNC coarse thread and Class 2A fit provide excellent thread engagement in soft materials or where rapid assembly is critical, reducing the risk of stripping. The square head with external square drive allows for high-torque application using standard tools, ensuring a tight, secure fit in machinery, automotive, and construction applications. With a Rockwell C45 hardness and cup point tip, it delivers superior resistance to vibration and rotational forces, making it an ideal choice for permanently securing gears, pulleys, and other rotating components on shafts. Its compliance with ASME B18.6.2 guarantees that it meets precise dimensional and performance standards, providing reliability in heavy-duty fastening scenarios.

Specification Summary & Compliance

This set screw features a 1/4"-20 UNC coarse thread with Class 2A thread fit, ensuring standard dimensional tolerances for consistent performance. It is manufactured in accordance with ASME B18.6.2 specifications, covering material, design, and testing requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. Additional specifications include a right-hand thread direction, 2" length, and cup tip type, all designed to meet industrial fastening needs.