S-91263A839 M6 x 20 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc plating extends service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 6g thread fit provides smooth installation and secure fastening, improving assembly efficiency and joint integrity.
• High-strength Class 10.9 grade with Rockwell C32 hardness offers excellent durability and resistance to wear under heavy loads.
• Fully threaded design allows for maximum grip along the entire length, enhancing holding power in various materials.
• Standard 90° countersink angle enables a flush finish, preventing snagging and ensuring a clean, professional appearance.
• Hex drive compatibility with a 4 mm key facilitates easy installation and removal, speeding up assembly and disassembly processes.

Professional Applications & Engineering Value

This M6 flat head screw is engineered from zinc-plated alloy steel to address common industrial challenges such as vibration loosening and environmental corrosion. Its coarse thread with a 1 mm pitch ensures quick engagement and strong holding in metals and composites, making it ideal for machinery, automotive assemblies, and structural frameworks. The fully threaded right-hand design distributes stress evenly, reducing the risk of stripping in high-torque applications. Compliant with DIN 7991/ISO 10642 standards, it guarantees dimensional accuracy and interchangeability, while the flat head with a standard profile provides a secure, low-profile fit that minimizes protrusion in confined spaces. This combination of features delivers reliable fastening solutions that enhance equipment longevity and operational safety in demanding settings.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including a Class 6g thread fit per metric standards, ensuring compatibility and ease of use. It meets DIN 7991 and ISO 10642 specifications for flat head screws, covering aspects such as head diameter (12 mm), length (20 mm), and countersink angle (90°). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial applications requiring environmental and safety standards.