Loose fasteners can cause catastrophic equipment failure. Vibrations from motors, vehicles, and daily use slowly turn screws until they detach. Regular flat washers cannot prevent this. You need shakeproof washers.
This guide explains how these small components protect your projects from severe vibration.
What is a Shakeproof Washer?
A shakeproof washer is a specialized locking component designed to prevent nuts, bolts, and screws from loosening. Unlike standard flat washers that just distribute weight, these hardware pieces use mechanical tension and physical barriers to grip the mating surfaces. They are critical in high-vibration environments like automotive engines, industrial machinery, and household appliances.
The Core Types of Shakeproof Washers
Choosing the right type depends on your specific assembly material and the level of vibration.
1. External Tooth Lock Washers
- Design: Teeth extend outward from the outer rim.
- Mechanism: The teeth bite into the bolt head and the mating surface.
- Best For: Maximum torsional resistance with large screw heads.
2. Internal Tooth Lock Washers
- Design: Teeth project inward toward the center hole.
- Mechanism: The teeth bite into the shank of the fastener.
- Best For: Small screw heads or applications requiring a clean, snag-free exterior finish.
