S-91263A866 M3 x 20 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional durability with Class 10.9 strength grade and Rockwell C32 hardness, ensuring reliable performance in demanding applications.
- Superior corrosion resistance thanks to zinc-plated alloy steel construction, extending service life in harsh environments.
- Secure and flush installation with a standard 90° countersink angle and flat head design for smooth, vibration-resistant surfaces.
- Easy and precise driving using a 2 mm hex drive, allowing for efficient assembly with standard tools.
- Optimized thread engagement with M3 coarse threading (0.5 mm pitch) and Class 6g fit, providing strong holding power and quick installation.
- Full-threaded design for maximum grip along the entire 20 mm length, enhancing load distribution and joint integrity.
- Compliance with international standards including DIN 7991, RoHS 3, and REACH, ensuring safety and regulatory adherence for global use.
Professional Applications & Engineering Value
This M3 flat head screw is engineered to address critical challenges in industrial assemblies, such as vibration loosening and material fatigue. Made from zinc-plated alloy steel, it offers excellent resistance to corrosion and wear, making it ideal for machinery, automotive, and structural applications where exposure to moisture or stress is common. The fully threaded metric design with a coarse thread pitch ensures rapid installation and robust fastening in metals and composites, while the 90° countersink angle allows for a seamless finish that minimizes protrusions. By meeting DIN 7991 specifications, it guarantees dimensional accuracy and reliability, reducing the risk of assembly failures and maintenance costs in heavy-duty fastening scenarios.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards, including a Class 6g thread fit for consistent engagement and a 20 mm length with M3 x 0.5 mm coarse threading. It conforms to DIN 7991 for manufacturing quality and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for environmentally conscious industries.
