S-91870A330 3/8"-16 x 1" ASME B18.3 Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper-proof security with T45 Torx drive that requires specialized tools, preventing unauthorized access in sensitive applications
• Superior corrosion resistance thanks to 18-8 stainless steel construction with passivated finish, ensuring long-term reliability in harsh environments
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Secure fastening performance with Class 2A thread fit and UNC coarse threads providing reliable engagement and vibration resistance
• Streamlined installation with standard 82° countersink angle allowing for flush mounting in various materials
• Full threading coverage along the entire 1" length ensures maximum grip and load distribution
• Regulatory compliance with ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 18-8 stainless steel flat head screw with tamper-resistant Torx drive addresses critical security and durability challenges in industrial settings. The combination of passivated finish and stainless steel material provides exceptional corrosion resistance for outdoor equipment, marine applications, and chemical processing facilities where environmental exposure is a concern. The T45 drive system offers superior torque transmission compared to standard security fasteners, reducing tool wear while maintaining tamper-proof integrity in public infrastructure, electrical enclosures, and access panels. The UNC coarse threads with Class 2A fit ensure reliable installation in various materials while the 82° flat head profile allows for clean, flush mounting in machinery, automotive assemblies, and structural applications where protrusion must be minimized.

Specification Summary & Compliance

This 3/8"-16 flat head screw features precise Class 2A thread fit according to UNC standards with right-hand threading direction. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations regarding hazardous substances, ensuring environmental responsibility. With a head diameter of 0.781" and standard flat head profile, the screw maintains consistent quality across production batches for reliable industrial use.