S-92311A055 0-80 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional thread precision with Class 3A fit ensures tight, secure fastening and minimizes the risk of loosening under vibration.
• High-strength performance backed by Rockwell B80 hardness, providing reliable holding power for demanding applications.
• Secure, non-slip installation using the 0.028" hex drive, allowing for high torque application in confined, headless designs.
• Enhanced gripping action from the cup point tip, which bites into the mating surface to prevent component slippage.
• Wide industrial compatibility with UNF fine threads (0-80) and right-hand direction, meeting common assembly requirements.
• Regulatory peace of mind with compliance to ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.

Professional Applications & Engineering Value

This 0-80 UNF set screw is engineered to solve critical challenges in precision assemblies where space is limited and vibration resistance is paramount. The 18-8 Stainless Steel material offers excellent resistance to oxidation and corrosion, making it suitable for use in electronics, aerospace components, and medical devices exposed to moisture or chemicals. The headless, hex drive design allows installation in tight spaces without protruding, while the cup point creates a firm bite into shafts and hubs, preventing rotational slip. Combined with a Class 3A thread fit and fine UNF threads, this screw ensures minimal backlash and reliable performance in high-precision, right-hand threaded applications, reducing maintenance needs and assembly failures.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including a Class 3A thread fit for superior tolerance and a 0-80 UNF fine thread with right-hand direction. It is manufactured in compliance with ASME B18.3 specifications and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances and safe for various industrial and international markets.