S-91301A210 7/8"-14 x 7/16" Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit ensuring precise, secure fastening in demanding applications
• Enhanced corrosion resistance from the Black-Oxide finish, extending service life in harsh industrial environments
• Exceptional durability provided by Alloy Steel with Rockwell C45 hardness, resisting wear and deformation under heavy loads
• Easy installation and removal with the 1/2" hex drive, allowing for high torque application without head interference
• Reliable fine thread engagement from the 7/8"-14 UNF design, offering improved vibration resistance and clamping force
• Headless design for flush mounting in confined spaces, enabling seamless integration without protrusion
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 7/8"-14 UNF set screw is engineered to address critical fastening challenges in industrial settings where vibration loosening and corrosion are common concerns. The Black-Oxide Alloy Steel construction, combined with Rockwell C45 hardness, provides a robust solution for maintaining positional accuracy in machinery, automotive assemblies, and heavy equipment. The fine thread and Class 3A fit ensure minimal backlash and superior grip, preventing slippage in high-stress applications. Its headless hex drive design allows for unobstructed operation in tight spaces, making it ideal for securing collars, gears, and pulleys without compromising structural integrity. By integrating corrosion-resistant properties and compliance with international regulations, this set screw delivers long-term reliability and performance in demanding engineering environments.

Specification Summary & Compliance

This set screw features a 7/8"-14 UNF fine thread with Class 3A thread fit for high precision and tight tolerances. Manufactured from Alloy Steel with a Black-Oxide surface treatment, it achieves a hardness of Rockwell C45 to withstand mechanical stresses. The product adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory acceptance in global markets.