S-92695A308 1/4"-20 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
• Exceptional holding power from the 90° cone point design, ensuring secure positioning of components on shafts and hubs.
• High-strength performance with Rockwell C45 hardness alloy steel, providing reliable resistance to vibration and loosening.
• Precise thread engagement with UNC coarse threads and Class 3A fit, enabling quick installation and reduced cross-threading risks.
• Space-saving headless design with 1/8" hex drive, allowing flush mounting in confined assemblies.
• Broad regulatory compliance including RoHS 3 and REACH, ensuring safe use in global markets.
• Optimized for right-hand threading in standard inch applications, facilitating straightforward assembly and maintenance.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address critical challenges in machinery assembly, such as component slippage and corrosion-induced failure. Its UNC coarse thread and Class 3A fit provide tight tolerances that prevent backlash in high-vibration settings like motor mounts and gear systems. The cone point with 90° angle bites securely into shafts, offering superior resistance to rotational forces without damaging the mating surface. Made from hardened alloy steel and finished with a protective black-oxide coating, it withstands exposure to oils and moderate moisture, making it ideal for automotive, manufacturing, and heavy equipment applications where reliability and precision are paramount.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy with a 1/4"-20 UNC coarse thread and Class 3A thread fit for precise engagement. The 1" length and right-hand thread direction comply with standard inch measurements, while the Rockwell C45 hardness guarantees mechanical durability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.