S-90729A169 M3 x 12 mm Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated finish.
• Reliable, high-strength fastening with a tensile strength of 70,000 psi and Rockwell B70 hardness for demanding applications.
• Precise and secure installation ensured by the Class 6g thread fit and a 2 mm hex drive that prevents cam-out.
• Optimal flush mounting with a flat, undercut head design that sits cleanly in countersunk holes.
• Full-length thread engagement for maximum grip and holding power across the entire 12 mm length.
• Broad industrial compatibility with coarse M3 x 0.5 mm metric threading, conforming to international standards.
• Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for global supply chain integration.

Professional Applications & Engineering Value

Engineered for industrial applications where corrosion resistance and precision are non-negotiable, these M3 flat head screws are a critical solution. The 316 stainless steel material, enhanced by a passivated finish, provides exceptional protection against chemicals, saltwater, and other corrosive agents, extending service life in marine, chemical processing, and outdoor equipment. The fully threaded design and Class 6g thread fit ensure consistent clamping force and vibration resistance, preventing loosening in dynamic assemblies. The undercut flat head allows for a flush, clean finish, ideal for applications in machinery, electronics, and fixtures where protrusions are unacceptable. This combination of material integrity and dimensional accuracy delivers reliable performance, reducing maintenance needs and downtime.

Specification Summary & Compliance

This metric screw adheres to precise dimensional standards, including an M3 thread size with a 0.5 mm coarse pitch and a Class 6g thread fit for standard tolerance. The head diameter is 6 mm with a tolerance of -0.127 to 0.127 mm, and the head height is 1.3 mm with a 100° countersink angle. Manufacturing and material specifications ensure compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the product is free from hazardous substances and suitable for use in regulated industries.