Shuntian High Strength Black Flat Washer: Grade 4.8 & 12.9 for M3 to M12 Screws

This high-strength black flat washer is an essential component for various assembly and fastening needs, compatible with M3 to M12 screw sizes. Designed to offer superior strength and durability, it comes in Grade 4.8 and 12.9, making it suitable for both standard and high-load applications. Engineered for optimal performance, this washer helps to evenly distribute load pressure, reducing wear and preventing damage to surfaces in industrial, construction, or personal projects. With its sleek black finish, it also provides a clean, professional appearance. Standard Type: National Standard Standard No.: GB96-85 Surface Treatment: Oxidation black Material Grade: Carbon steel Q235 Product Grade: A-level Application: Automotive Fasteners Manufacture country: China Instructions included: No