S-90729A368 M5 x 16 mm Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel and passivated finish, ideal for harsh environments and extended service life.
• High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable fastening under demanding loads.
• Precise and secure thread engagement due to the Class 6g thread fit, reducing the risk of cross-threading and ensuring consistent assembly quality.
• Efficient installation and removal with the 3 mm hex drive, providing a positive grip and reducing the risk of tool slippage and head stripping.
• Optimal flush mounting with the undercut flat head profile, allowing the screw to sit neatly countersunk for a smooth surface finish.
• Broad compatibility with coarse thread spacing (0.8 mm pitch), making it suitable for a wide range of standard metric applications.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring they are safe for use in regulated industrial and international markets.

Professional Applications & Engineering Value

This M5 flat head screw is engineered to solve critical challenges in industrial assembly, particularly where corrosion resistance and mechanical strength are paramount. The core of its value lies in the 316 Stainless Steel material and passivated finish, which together provide exceptional protection against corrosive agents like chlorides and acids, making these metric hex drive screws ideal for marine, chemical processing, and food-grade equipment. The fully threaded design and Class 6g thread fit ensure maximum grip and vibration resistance in materials from metals to high-density plastics, preventing loosening in dynamic environments. The undercut flat head and 100° countersink angle allow for a flush, low-profile installation, eliminating protrusions that could snag or compromise the integrity of assembled products. This combination directly addresses engineering needs for durability, reliability, and compliance in demanding industrial applications.

Specification Summary & Compliance

This screw adheres to Metric (ISO) standards with an M5 x 0.8 mm coarse thread and a precise Class 6g thread fit tolerance. Key dimensional specifications include a head diameter of 10 mm (with a tolerance of -0.127 to 0.127 mm) and a length of 16 mm. The drive is a 3 mm hex, and the head profile is an undercut flat type. The product is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free of hazardous substances and suitable for global industrial supply chains.