S-94063A330 M4 x 12 mm 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 industrial environments.
• Precise, reliable fastening ensured by Class 6g thread fit and metric coarse threading for easy assembly and vibration resistance.
• High mechanical strength offering 80,000 psi tensile strength and Rockwell B96 hardness for demanding applications.
• Secure, tamper-resistant installation with a drilled spanner drive flat head, providing a flush finish and controlled torque.
• Full thread engagement along the 12mm length for maximum grip and load distribution in thin materials.
• Compliance with strict environmental regulations, including RoHS 3 and REACH, ensuring safe and sustainable use.
• Standard 90° countersink angle for a seamless fit in pre-drilled holes, enhancing aesthetic and functional integrity.

Professional Applications & Engineering Value

This M4 flat head screw is engineered to address critical challenges in precision assembly and corrosive environments. The 18-8 stainless steel construction, combined with a passivated finish, provides exceptional resistance to rust and chemical exposure, making it suitable for electronics, machinery, and outdoor equipment. The Class 6g thread and metric coarse pitch ensure quick, accurate installation with reduced cross-threading risks, while the drilled spanner drive offers secure torque application for flush-mounted components. With a fully threaded design and high tensile strength, it delivers consistent clamping force in applications requiring vibration resistance and long-term reliability, from automotive to industrial automation.

Specification Summary & Compliance

This fastener adheres to metric system standards with an M4 x 0.7mm thread size, Class 6g thread fit for precise tolerance, and a 12mm length. It meets manufacturing specifications for flat head profile and 90° countersink angle, ensuring compatibility with standard holes. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for global industrial use.