S-92695A105 4-40 x 1/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating on alloy steel, extending service life in demanding industrial environments.
• Exceptional holding power from the 118° cone point design, ensuring secure and permanent component positioning.
• High-strength performance backed by Rockwell C45 hardness, providing reliable resistance to wear and deformation.
• Precise and reliable fit with Class 3A thread tolerance, offering consistent engagement and reducing the risk of cross-threading.
• Easy and secure installation using the 0.050" hex drive, allowing for high torque application in confined, headless designs.
• Broad industrial compliance meeting ASME B18.3 standards, ensuring interchangeability and engineering reliability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, supporting global supply chain requirements.

Professional Applications & Engineering Value

This 4-40 UNC set screw is engineered to address critical challenges in precision assembly and motion control systems. The black-oxide alloy steel construction provides a durable barrier against rust and oxidation, essential for machinery operating in variable humidity conditions. Its headless design and hex drive enable flush mounting in tight spaces, while the coarse UNC thread and Class 3A fit ensure rapid, secure fastening with minimal thread wear over repeated adjustments. The 118° cone point concentrates clamping force effectively, preventing slippage in pulleys, collars, and gears—making it ideal for high-vibration applications in automotive, aerospace, and industrial equipment where precision set screws are paramount for safety and performance.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for superior dimensional accuracy and is manufactured in accordance with ASME B18.3 specifications. It features a 4-40 UNC coarse thread with right-hand direction and a length of 1/8". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.