S-91870A718 6-32 x 1 1/2" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Superior tamper-resistance with the specialized Torx Plus IPR15 drive, preventing unauthorized access in secure environments.
• Exceptional corrosion resistance thanks to the 18-8 Stainless Steel material and passivated finish, ensuring long-term reliability in harsh conditions.
• High-strength performance with a 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications.
• Precise and reliable thread engagement from the Class 3A thread fit and UNC coarse thread, providing a secure, vibration-resistant connection.
• Flush and unobtrusive installation with the standard flat head profile and 82° countersink angle for a smooth, finished surface.
• Full-threaded design for maximum grip and holding power along the entire 1-1/2" length.
• Guaranteed compliance and quality, manufactured to meet ASME B18.3 specifications and RoHS/REACH environmental regulations.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Flat Head Screw is engineered to solve critical challenges in industrial and security-focused applications. The tamper-resistant Torx Plus drive (IPR15) is specifically designed to deter vandalism and unauthorized disassembly, making it ideal for public infrastructure, electronic enclosures, and machinery requiring controlled access. Its passivated finish enhances the natural corrosion resistance of stainless steel, preventing rust and degradation in humid or chemically aggressive environments. The Class 3A thread fit on the 6-32 UNC coarse thread ensures a precise, tight connection that resists loosening under vibration, a common failure point in dynamic systems. Combined with its high tensile strength, this fastener delivers a reliable, long-lasting, and secure fastening solution for engineers who cannot compromise on safety or durability.

Specification Summary & Compliance

This screw features a 6-32 UNC thread with a Class 3A fit for high-precision assembly. It is fully threaded and manufactured in compliance with the ASME B18.3 standard. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and safety regulations for use in various global markets.