S-94063A313 6-32 x 5/16" 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 construction and passivated finish, ideal for harsh industrial environments
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under load
• Secure tamper-resistant installation using the drilled spanner drive, preventing unauthorized removal
• Precise flush mounting with 82° countersink angle and flat head design for smooth surface finishes
• Easy assembly and vibration resistance with coarse UNC threads and Class 2A fit for quick installation and secure hold
• Full thread engagement along the 5/16" length for maximum grip strength in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 6-32 UNC flat head spanner screw delivers exceptional engineering value in demanding industrial applications where security, corrosion resistance, and flush mounting are critical. The 18-8 stainless steel material with passivated finish provides superior protection against corrosion in marine, chemical processing, and outdoor equipment applications. The drilled spanner drive offers tamper-resistant benefits for security panels, access covers, and public infrastructure while maintaining a clean, flush appearance. With fully threaded coarse UNC threads and Class 2A fit, these screws ensure rapid installation and reliable performance in machinery assembly, electronic enclosures, and precision equipment where vibration resistance and consistent clamping force are essential for operational safety and longevity.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread profile ensuring consistent performance. The screw meets ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material compliance. The combination of 70,000 psi tensile strength, Rockwell B70 hardness, and full threading provides reliable mechanical performance across various industrial fastening requirements.