S-94063A199 8-32 x 1" ASME B18.6.3 Tamper-Resistant Drilled Spanner Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments and long-term reliability.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications.
• Precise flush installation enabled by the 82° countersink angle and flat head design, ensuring a smooth, secure surface finish.
• Reliable thread engagement with fully threaded UNC coarse threads and Class 2A fit, providing consistent clamping force and vibration resistance.
• Secure and tamper-resistant fastening via the drilled spanner drive, allowing for high-torque installation in confined spaces.
• Broad industrial compliance meeting ASME B18.6.3 standards, RoHS 3, and REACH, ensuring quality and environmental safety.
• Optimized for heavy-duty use with a 1" length and coarse thread spacing, delivering robust performance in machinery and equipment assembly.

Professional Applications & Engineering Value

This 8-32 UNC flat head screw is engineered to address critical challenges in industrial settings, such as corrosion, vibration loosening, and space constraints. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to rust and chemical exposure, making it suitable for outdoor, marine, or chemical processing equipment. The fully threaded design with coarse thread spacing ensures rapid installation and high pull-out strength, while the Class 2A thread fit guarantees precise alignment and reduced risk of cross-threading. The drilled spanner drive allows for secure tightening in areas with limited tool access, enhancing assembly efficiency. Ideal for applications in machinery, automotive, and electronics, this screw delivers reliable, long-lasting performance where flush mounting and durability are paramount.

Specification Summary & Compliance

This screw features a Class 2A thread fit with UNC coarse threads, ensuring dimensional accuracy per ASME B18.6.3 specifications. The 82° countersink angle and standard flat head profile provide consistent flush seating. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses.