S-91301A150 5/16"-24 x 5/32" Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A fine thread fit for maximum resistance to vibration and loosening in demanding applications
• Enhanced durability and strength from Rockwell C45 hardness alloy steel, ensuring long-term performance under high stress
• Excellent corrosion resistance thanks to the Black-Oxide surface treatment, extending service life in harsh industrial environments
• Secure and efficient installation with the 5/32" hex drive headless design, allowing flush mounting and easy access in confined spaces
• Precise right-hand UNF fine threading for reliable engagement and consistent clamping force in precision assemblies
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries
• Optimized for inch-system applications with standardized 5/16"-24 thread size, facilitating seamless integration in North American machinery

Professional Applications & Engineering Value

This Black-Oxide alloy steel set screw is engineered to address critical challenges in industrial fastening, where vibration resistance and corrosion protection are paramount. The Class 3A UNF fine thread provides tighter tolerances than standard fits, minimizing backlash and maintaining clamping force in precision equipment like motor shafts, gear assemblies, and automation systems. The headless design with 5/32" hex drive enables flush mounting, eliminating protrusions in compact spaces while allowing high torque application. Made from alloy steel with Rockwell C45 hardness, it withstands repetitive loads without deforming, making it ideal for industrial fasteners in machinery, automotive, and aerospace sectors where reliability is non-negotiable.

Specification Summary & Compliance

This set screw adheres to inch system measurements with a 5/16"-24 UNF fine thread and Class 3A thread fit for high precision. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety. The manufacturing ensures consistent thread diameter of 0.313" and right-hand thread direction, suitable for standard industrial applications requiring reliable, corrosion-resistant fastening solutions.