S-91301A036 3/4"-10 x 3/8" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments.
• Exceptional thread precision with Class 3A fit for reliable, vibration-resistant fastening and reduced assembly errors.
• High-strength durability from alloy steel and Rockwell C45 hardness, ensuring long-term performance under heavy loads.
• Easy installation and removal with 3/8" hex drive, allowing efficient maintenance with standard tools.
• Secure headless design for flush mounting in tight spaces, preventing interference in machinery assemblies.
• Coarse UNC threading for quick engagement and robust holding power in various materials.
• Compliant with environmental standards including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This 3/4"-10 UNC set screw is engineered to address critical challenges in industrial fastening, such as vibration loosening and corrosion-induced failure. The black-oxide alloy steel construction provides a protective layer that resists rust and wear, ideal for applications in machinery, automotive, and heavy equipment where exposure to moisture and stress is common. With a Class 3A thread fit and coarse UNC thread type, it ensures precise alignment and strong grip in assemblies, reducing the risk of slippage. The hex drive style and headless design facilitate easy access in confined spaces, streamlining maintenance while upholding Rockwell C45 hardness for consistent performance under dynamic loads. This makes it a reliable choice for securing components in pulleys, gears, and couplings, enhancing operational safety and efficiency.

Specification Summary & Compliance

This set screw adheres to inch system measurements with a thread size of 3/4"-10 UNC, thread diameter of 0.75", and coarse thread spacing. It features a Class 3A thread fit for high precision and right-hand thread direction. Manufactured from alloy steel with a hardness of Rockwell C45, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industry-standard quality for reliable use in technical applications.