S-91375A271 12-24 x 5/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to the black-oxide finish on alloy steel, extending service life in harsh environments.
• Exceptional holding power with a cup point tip that bites into materials, preventing slippage and maintaining secure positioning.
• High-strength durability from Rockwell C45 hardness, ensuring the screw withstands high torque and repeated use without deformation.
• Precise and reliable threading with Class 3A fit and UNC coarse threads, enabling quick assembly and vibration resistance in demanding applications.
• Easy installation and removal using a standard 3/32" hex drive, allowing for efficient maintenance and adjustments in tight spaces.
• Space-saving headless design that sits flush with surfaces, ideal for assemblies where protrusions are not feasible.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 12-24 UNC set screw is engineered to address critical challenges in industrial settings, such as component slippage and corrosion-induced failure. The black-oxide alloy steel construction provides a robust barrier against moisture and chemicals, reducing maintenance needs in machinery, automotive, and aerospace applications. With a cup point tip and coarse threading, it delivers superior grip on shafts and collars, preventing rotational movement under high stress. The Class 3A thread fit ensures tight tolerances for reliable performance in precision assemblies, while the headless design and hex drive facilitate easy access in confined spaces, streamlining installation and enhancing operational efficiency.

Specification Summary & Compliance

This set screw adheres to strict dimensional standards, including a Class 3A thread fit for high precision and UNC coarse threads with a size of 12-24. It meets ASME B18.3 specifications for consistency and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances and safe for various industrial uses.