S-91375A076 2-56 x 3/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications.
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in various industrial environments.
• High-strength durability from Rockwell C45 hardness, ensuring the screw withstands high stress and repeated use without stripping or deforming.
• Easy and secure installation with the hex drive design, allowing for high torque application and reducing the risk of tool slippage.
• Reliable positioning and locking due to the cup tip, which concentrates force for a firm grip on shafts and components.
• Broad compatibility with UNC coarse threads, facilitating quick assembly and disassembly in right-hand threaded systems.
• Compliance with industry standards including ASME B18.3, ensuring consistent quality and performance in mechanical assemblies.

Professional Applications & Engineering Value

This 2-56 UNC set screw is engineered to address common challenges in precision machinery, such as component slippage and loosening under vibration. Crafted from black-oxide alloy steel, it offers enhanced resistance to rust and wear, making it ideal for industrial settings where exposure to moisture or chemicals is a concern. The headless design and hex drive allow for flush mounting and easy access in confined spaces, while the Class 3A thread fit ensures tight tolerances for reliable fastening in applications like motor shafts, gears, and pulleys. Its cup tip provides focused pressure to prevent rotation, delivering long-term stability in right-hand thread assemblies. By meeting ASME B18.3 specifications, this screw guarantees consistency and safety, reducing downtime and maintenance costs in industrial applications.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including a Class 3A thread fit for superior accuracy in UNC coarse threads. It conforms to ASME B18.3 manufacturing specifications, ensuring reliable performance. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and sustainable industrial practices.