S-92695A312 1/4"-28 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications.
• Enhanced corrosion resistance from the black-oxide finish on alloy steel, extending service life in industrial environments.
• High-strength durability with a Rockwell C45 hardness rating, ensuring reliable performance under heavy loads.
• Secure, flush mounting due to the headless design and 90° cone point, which bites into materials for a non-slip grip.
• Easy installation and removal with a 1/8" hex drive, allowing for high torque application in confined spaces.
• Fine thread spacing (UNF) for improved adjustment accuracy and better load distribution compared to coarse threads.
• Right-hand thread direction for standard, intuitive installation compatible with common assembly practices.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address critical challenges in precision assembly and machinery. The 90° cone point tip provides excellent bite into shafts and components, preventing rotational slip and maintaining alignment in industrial applications like motor mounts, pulleys, and gear assemblies. Its headless design allows for flush installation, ideal for spaces where protruding fasteners are not feasible. The fine UNF threads and Class 3A fit ensure minimal backlash and superior vibration resistance, crucial for maintaining precision in dynamic environments. Made from hardened alloy steel, it offers reliable strength for heavy-duty fastening needs, reducing maintenance frequency and downtime.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. The thread fit is Class 3A, providing tight tolerances for precision assemblies. It 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 markets. Manufactured to inch system measurements, it features a 1/4"-28 UNF fine thread, 3/8" length, and a right-hand thread direction, meeting industry standards for quality and safety.