S-91900A202 8-32 x 5/8" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with specialized Torx T15 drive, preventing unauthorized access and ensuring equipment security in public or high-risk environments.
• Excellent corrosion resistance thanks to 18-8 Stainless Steel construction and passivated finish, ideal for harsh or outdoor applications where moisture and chemicals are present.
• High mechanical strength and durability with 70,000 psi tensile strength and Rockwell B70 hardness, providing reliable, long-term performance under stress and vibration.
• Precise, secure fastening achieved through Class 3A thread fit and UNC coarse threading, reducing cross-threading risks and ensuring consistent clamp load.
• Streamlined, low-profile installation with a rounded button head design that minimizes snagging and offers a clean, finished appearance.
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards, ensuring safety, environmental responsibility, and global acceptance.
• Versatile right-hand coarse thread with full threading for maximum grip across the entire 5/8" length, suitable for a wide range of materials and assembly needs.

Professional Applications & Engineering Value

This 8-32 UNC coarse thread screw with a tamper-resistant Torx T15 drive is engineered to address critical security and durability challenges in industrial settings. Manufactured from 18-8 Stainless Steel and featuring a passivated finish, it resists oxidation and chemical attack, making it ideal for electronics enclosures, public infrastructure, medical devices, and outdoor machinery. The rounded button head provides a smooth surface that reduces injury risks and interference, while the Class 3A thread fit ensures tight, reliable connections that withstand vibration and load. By integrating high tensile strength and tamper-proof design, this screw delivers long-term performance and security, minimizing maintenance and unauthorized tampering in demanding applications.

Specification Summary & Compliance

This screw adheres to precise dimensional and performance standards, including Class 3A thread fit for superior accuracy and UNC coarse thread specifications. It is manufactured in compliance with ASME B18.3 and is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it meets rigorous safety and environmental regulations for global use.