S-94063A324 M3 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 environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B96 hardness for reliable, long-term fastening
• Precise thread engagement with Class 6g tolerance and coarse pitch (0.5mm) ensuring easy installation and vibration resistance
• Secure, low-profile installation featuring a standard flat head with 90° countersink angle for flush mounting in precision assemblies
• Convenient tooling and tamper resistance with drilled spanner drive (No. 4) enabling simple installation and removal
• Full thread coverage along the 8mm length provides maximum grip and load distribution across the entire fastener
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These M3 flat head screws are engineered to address critical challenges in precision assembly and corrosive environments. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to oxidation and chemical exposure, making them ideal for electronics enclosures, marine equipment, and food processing machinery where moisture and contaminants are concerns. The fully threaded design with Class 6g thread fit ensures consistent clamping force and reduces the risk of loosening under vibration, while the drilled spanner drive offers both installation convenience and tamper-resistant characteristics. With a coarse thread pitch (0.5mm), these metric screws allow for quicker assembly and are less prone to cross-threading compared to fine-pitch alternatives, enhancing productivity in high-volume manufacturing settings.

Specification Summary & Compliance

This M3 x 0.5mm x 8mm flat head screw features a Class 6g thread tolerance per metric standards, ensuring precise dimensional accuracy for consistent performance. The fastener is fully threaded with a length of 8mm, head diameter of 5.59mm (tolerance: -0.29 to 0 mm), and a standard 90° countersink angle. Manufacturing adheres to industry specifications for metric thread fasteners, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing suitability for global industrial and consumer applications.