S-91900A835 8-32 x 1/4" Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Tamper-resistant T15 Torx drive prevents unauthorized removal, enhancing security in public or sensitive equipment installations.
• 18-8 stainless steel construction offers excellent corrosion resistance, ensuring long-term reliability in harsh or humid environments.
• Class 3A thread fit provides superior precision and tight tolerances for secure, vibration-resistant fastening in critical assemblies.
• High tensile strength of 70,000 psi and Rockwell B70 hardness deliver exceptional load-bearing capacity and durability under stress.
• Passivated finish enhances the natural corrosion resistance of stainless steel, extending service life in industrial applications.
• Rounded button head design reduces the risk of snagging and provides a low-profile, aesthetically pleasing finish.
• Full threading ensures consistent grip along the entire length, improving holding power in various materials.

Professional Applications & Engineering Value

Engineered for demanding industrial and security applications, this 8-32 UNC tamper-resistant Torx screw addresses critical challenges in equipment assembly and maintenance. The 18-8 stainless steel material, combined with a passivated finish, resists oxidation and chemical exposure, making it ideal for outdoor, marine, or chemical processing environments where corrosion can compromise fastener integrity. The tamper-resistant T15 drive deters vandalism and unauthorized access, essential for public infrastructure, electronics enclosures, and machinery requiring controlled access. With a Class 3A thread fit and coarse UNC threading, it ensures quick installation and reliable performance in metals and plastics, reducing the risk of loosening from vibrations. This rounded head screw is a trusted solution for OEMs and maintenance teams seeking security, durability, and compliance in fasteners.

Specification Summary & Compliance

This fastener adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use. Manufacturing specifications include a tensile strength of 70,000 psi, Rockwell B70 hardness, and full threading for consistent performance.