Stainless steel Metric Internal-Tooth Lock Washers

Metric Internal-Tooth Lock Washers.Internal teeth dig into the screw head while the smooth outside edge won't snag objects. These washers provide greater vibration resistance than split lock washers. Use with fasteners that have small heads, such as fillister and cheese head screws.
Black-oxide steel washers are mildly corrosion-resistant in dry environments.
Zinc-plated steel washers resist corrosion in wet environments.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.    

The internal toothlock washer plays a vital role in the connection of the equipment, and its main functions have the following aspects:
1. Improve connection tightness: The inner tooth lock washer can effectively improve the tightness and connection strength of the equipment by filling the connection gap locking the connection body, and avoiding the problem of loosening and falling off the connection.
2. Enhance the safety of the connection: the locking effect of the internal tooth lock washer can prevent the equipment from loosening under vibration and impact conditions, and ensure the stability and safety of the equipment.
3. Reduce the risk of connection failure: The internal tooth lock washer can evenly distribute the pressure in the connection, reducing the wear and fatigue of the connection point, extending the connection life, and reducing the risk of connection failure.
4. Simplify the assembly process: the internal tooth lock washer is easy to use, and it can be installed on the connection body by pressurizing it, which is more convenient and faster than other fasteners.