S-96669A243 3/8"-16 x 1" ASME B18.3 Sealing Tamper-Resistant Torx Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced Security & Tamper Resistance - The specialized T45 Torx drive prevents unauthorized removal, ideal for public or high-security installations.
• Reliable Pressure Sealing up to 1500 psi - The integrated Buna-N rubber O-ring creates a durable seal, protecting components from leaks in demanding environments.
li>Superior Corrosion Resistance - Made from 18-8 Stainless Steel with a passivated finish for excellent durability in harsh or outdoor conditions.
• High Tensile Strength for Demanding Applications - With a tensile strength of 70,000 psi, this screw ensures a secure, long-lasting hold under significant stress.
• Wide Temperature Compatibility - The O-ring performs reliably in temperatures from -40 to 225°F, making it suitable for a broad range of industrial settings.
• Optimized for Flush Mounting - The undercut flat head design allows the screw to sit perfectly flush with the surface for a clean, professional finish.
• Guaranteed Fit and Interchangeability - Manufactured to UNC coarse thread standards with a Class 2A fit for easy installation and consistent performance.

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw is engineered to solve critical challenges in industrial assembly and maintenance. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to corrosion and oxidation, extending service life in challenging environments. The tamper-resistant T45 Torx drive is a key security feature, deterring vandalism and unauthorized access in public infrastructure, machinery, and electronic enclosures. Most notably, the integrated Buna-N rubber O-ring addresses the common problem of fluid and gas leaks. It creates a positive seal capable of withstanding pressures up to 1500 psi, making this fastener an ideal choice for sealing applications in hydraulic systems, pumps, compressors, and pressurized containers, ensuring operational integrity and safety.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with a Class 2A thread fit for standard tolerance and ease of assembly. It is fully threaded for maximum grip and is designed with an 82° countersink angle. Manufacturing and dimensional compliance is guaranteed per the ASME B18.3 specification. Furthermore, this product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of hazardous substances and safe for use in regulated markets.