S-91294A448 M16 x 40 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with a Class 10.9 rating (120,000 psi) ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Black-oxide coating on alloy steel provides superior corrosion resistance and a durable finish, extending service life in harsh industrial environments.
• Full metric threading with Class 6g tolerance guarantees precise fit and easy installation, minimizing assembly time and improving joint integrity.
• Hex drive design (10 mm) allows for high-torque application with standard tools, enhancing grip and preventing stripping during tightening.
• 90° countersink angle and flat head profile enable a flush finish when installed, ideal for applications where a smooth surface is critical for safety and aesthetics.
• Compliance with DIN 7991/ISO 10642 standards ensures consistent quality and interchangeability, supporting global engineering specifications and supply chain efficiency.
• RoHS 3 and REACH environmental compliance meets stringent regulatory requirements, making it suitable for use in eco-conscious industries without hazardous substances.

Professional Applications & Engineering Value

This M16 flat head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in heavy machinery. The black-oxide alloy steel construction, combined with a Rockwell C32 hardness, provides excellent wear resistance and durability, making it ideal for structural assemblies, automotive components, and construction equipment. The fully threaded coarse pitch (2 mm) design ensures rapid installation and strong holding power in materials like steel and cast iron, while the hex drive facilitates secure fastening in confined spaces. By adhering to DIN 7991 and ISO 10642 standards, this screw delivers consistent performance, reducing maintenance needs and downtime in high-strength applications.

Specification Summary & Compliance

This fastener features precise metric threading with Class 6g tolerance and a coarse thread pitch of 2 mm, ensuring accurate fit according to international standards. It meets DIN 7991 (equivalent to ISO 10642) for dimensional consistency and is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for environmental and health standards in industrial use.