S-91375A447 10-32 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Class 3A thread fit for reliable, 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 maintains its form and function under high stress.
• Secure, non-slip engagement thanks to the cup tip design, which bites into the shaft for a positive grip and prevents component slippage.
• Easy installation and removal with the 3/32" hex drive, allowing for efficient assembly and maintenance with standard tools.
• Precision fine threading (UNF) offers a tighter seal and improved load distribution compared to coarse threads.
• Flush, space-saving design as a headless set screw, ideal for applications where a protruding head is not feasible.

Professional Applications & Engineering Value

This 10-32 UNF Class 3A set screw is engineered to address critical challenges in precision assemblies, such as securing collars, gears, and pulleys onto shafts. The black-oxide alloy steel construction provides excellent resistance to rust and wear, making it suitable for automotive, machinery, and aerospace components exposed to harsh conditions. The fine thread spacing and right-hand thread direction ensure a tight, reliable fit that withstands vibrational forces, reducing the risk of loosening over time. The cup tip concentrates pressure for a firm bite, preventing rotational slip and maintaining alignment. By utilizing this hex drive set screw, engineers can achieve consistent clamping force and enhance the longevity of their equipment, streamlining maintenance and boosting operational reliability.

Specification Summary & Compliance

This set screw adheres to Class 3A thread tolerances for high precision and consistent fit. It conforms to ASME B18.3 and ASTM F912 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free from hazardous substances and safe for use in various industrial markets.