S-94105A372 5/16"-24 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh industrial environments.
• High-strength durability with Rockwell C45 hardness, ensuring reliable performance under heavy loads without stripping or deformation.
• Secure, flush installation thanks to the headless design and flat tip, ideal for confined spaces and smooth surface contact.
• Easy installation and removal with a 5/32" hex drive, providing firm tool grip and reducing slippage during torque application.
• Fine thread spacing (UNF) for improved adjustment accuracy and better load distribution compared to coarse threads.
• Right-hand thread direction ensures compatibility with standard assembly practices, simplifying maintenance and replacement.

Professional Applications & Engineering Value

This 5/16"-24 UNF Class 3A set screw is engineered to address critical challenges in industrial machinery, automotive, and precision equipment assembly. The black-oxide alloy steel construction provides excellent resistance to rust and wear, making it suitable for environments exposed to moisture, chemicals, or high stress. Its headless design and flat tip allow for seamless integration into shafts, collars, and pulleys without protruding, minimizing interference and enhancing safety. The fine thread spacing and Class 3A fit ensure tight tolerances, reducing the risk of loosening under vibration—common in motors and rotating components. By meeting ASME B18.3 and ASTM F912 standards, it guarantees consistent quality and reliability, supporting efficient B2B procurement for MRO and OEM applications where precision and compliance are paramount.

Specification Summary & Compliance

This set screw adheres to strict dimensional and performance criteria, including a Class 3A thread fit for high precision in UNF fine threads (5/16"-24). It is manufactured in accordance with ASME B18.3 and ASTM F912 specifications, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in various industrial sectors.