S-94063A328 M4 x 8 mm 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
• Precise Class 6g thread fit ensures reliable engagement and reduces the risk of cross-threading during assembly
• High tensile strength of 80,000 psi provides dependable load-bearing capacity for demanding applications
• Drilled spanner drive (No. 8 size) allows for secure tool engagement and easy installation in confined spaces
• Fully threaded design delivers maximum grip length and uniform clamping force along the entire fastener
• 90° countersink angle and flat head profile enables flush mounting for clean, professional finishes
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

These M4 metric flat head screws with Class 6g thread precision are engineered to address critical industrial fastening challenges. The 18-8 stainless steel material combined with a passivated finish provides exceptional resistance to corrosion and oxidation, making them ideal for machinery, automotive, and electronic assemblies exposed to moisture or chemicals. The fully threaded coarse pitch (0.7mm) design ensures rapid installation and superior holding power in soft materials or pre-tapped holes. With a Rockwell B96 hardness and 80,000 psi tensile strength, these screws maintain integrity under vibration and dynamic loads, while the drilled spanner drive offers reliable torque transmission in space-constrained applications, reducing assembly time and improving operational efficiency.

Specification Summary & Compliance

This M4 x 0.7mm x 8mm flat head screw features a metric coarse thread with Class 6g tolerance for precise fit, manufactured to standard flat head profile with 90° countersink angle. The fastener is fully threaded and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. Head diameter tolerance is controlled between -0.36 to 0 mm for consistent performance in industrial applications.