S-91900A924 3/8"-16 x 5/8" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Tamper-resistant T45 drive provides enhanced security against unauthorized removal, ideal for public or high-risk environments
• 18-8 stainless steel construction offers excellent corrosion resistance and durability in harsh industrial conditions
• 70,000 psi tensile strength ensures reliable performance under high-stress applications without failure
• Passivated finish extends service life by providing an additional protective layer against rust and chemical exposure
• Class 3A thread fit guarantees precise, secure fastening with minimal risk of loosening in vibration-prone settings
• Fully threaded design allows for maximum grip and load distribution across the entire fastener length
• Rockwell B70 hardness maintains structural integrity and resists wear during repeated installation and removal cycles

Professional Applications & Engineering Value

This tamper-resistant Torx button head screw is engineered to address critical security and durability challenges in industrial and commercial settings. The 18-8 stainless steel material combined with a passivated finish provides superior resistance to corrosion, making it suitable for outdoor equipment, machinery, and facilities exposed to moisture or chemicals. The T45 drive style deters tampering, ensuring that access points in public infrastructure, electrical enclosures, and transportation systems remain secure. With a coarse UNC thread and Class 3A fit, it offers quick installation and reliable holding power in metals, plastics, and composite materials, reducing maintenance needs and enhancing operational safety.

Specification Summary & Compliance

This fastener features a 3/8"-16 UNC coarse thread with Class 3A precision for tight tolerances and secure fit. It complies with ASME B18.3 manufacturing standards, ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming it is free from hazardous substances and safe for use in regulated industries.