S-91870A350 3/8"-16 x 1 1/2" ASME B18.3 Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security: Tamper-resistant T45 Torx drive prevents unauthorized removal, ideal for public or high-risk installations.
• Superior Corrosion Resistance: Made from 18-8 stainless steel with a passivated finish for long-lasting performance in harsh, humid, or chemical environments.
• High Mechanical Strength: With 70,000 psi tensile strength and Rockwell B70 hardness, it withstands heavy loads and vibrations without failure.
• Reliable Thread Engagement: Fully threaded UNC coarse design with Class 2A fit ensures quick, secure fastening and reduced cross-threading risks.
• Flush, Professional Finish: Standard flat head with 82° countersink angle sits seamlessly in surfaces, minimizing protrusion and improving aesthetics.
• Broad Compliance: Meets ASME B18.3 specifications and is RoHS 3 and REACH compliant, ensuring safety and regulatory adherence.
• Durability in Demanding Settings: Combines material toughness with precision engineering for extended service life in industrial applications.

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head tamper-resistant Torx screw is engineered to address critical needs in security-sensitive and demanding industrial environments. The 18-8 stainless steel construction, enhanced by a passivated finish, provides exceptional resistance to corrosion and oxidation, making it suitable for outdoor machinery, marine equipment, and chemical processing plants. The tamper-resistant T45 Torx drive offers a secure fastening solution that deters vandalism and unauthorized access, commonly used in public infrastructure, electrical enclosures, and transportation systems. Its fully threaded coarse design and Class 2A thread fit ensure rapid installation and reliable hold in materials like metal and hardwood, reducing assembly time and maintenance costs. By integrating high tensile strength and standardized dimensions, this screw delivers consistent performance, minimizing downtime and enhancing operational safety in engineering projects.

Specification Summary & Compliance

This product adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and an 82° countersink angle for flush mounting. It conforms to ASME B18.3 specifications for flat head screws, ensuring interoperability and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and restricted substance adherence for global industrial use.