S-90729A628 M12 x 25 mm ASTM A276 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 mechanical strength and reliability with 70,000 psi tensile strength and Rockwell B70 hardness, reducing the risk of fastener failure under load.
• Efficient and secure installation using the 8 mm hex drive, providing excellent torque transfer and minimizing tool slippage.
• Optimal flush seating due to the 100° countersink angle and undercut flat head profile, creating a smooth surface finish.
• Precise and reliable thread engagement with Class 6g fit and coarse M12x1.75mm thread, ensuring consistent performance in various materials.
• Full thread coverage along the 25 mm length for maximum grip and holding power in demanding applications.
• Compliance with major industry standards including ASTM A276, RoHS 3, and REACH, guaranteeing material quality and environmental safety.

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these M12 flat head screws are crafted from 316 Stainless Steel, offering exceptional resistance to chemicals, saltwater, and other corrosive agents. The passivated finish further enhances this durability, preventing surface oxidation and extending the component's lifecycle. The fully threaded design with a coarse thread pitch ensures rapid assembly and high pull-out strength in soft metals, plastics, and wood, making them ideal for machinery, marine hardware, and structural frameworks. The undercut flat head and precise 100° countersink angle allow for a flush mount, eliminating protrusions that could interfere with moving parts or aesthetic requirements. This combination of material grade, thread form, and robust construction directly addresses common challenges like vibration loosening, corrosion-induced failure, and installation inefficiency in industrial applications.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a head diameter tolerance of -0.127 to 0.127 mm and a Class 6g thread fit per metric standards, ensuring consistent quality and interchangeability. Manufacturing and material specifications conform to ASTM A276. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmentally responsible procurement.