Internal / External Tooth Lock Washer 400 Series Stainless Steel

Internal / External Tooth Lock Washer 400 Series Stainless Steel

Internal / External Tooth Lock Washer 400 Series Stainless Steel fasteners are designed to provide superior resistance to loosening in bolted and screwed assemblies exposed to vibration, movement, and dynamic loads. Combining the benefits of both internal and external tooth designs, these lock washers create multiple points of contact between the fastener, washer, and mating surface. This aggressive gripping action helps maintain clamp load and improves fastening reliability in demanding industrial, commercial, and mechanical applications.

Durable 400 Series Stainless Steel Construction

Manufactured from 400 Series stainless steel, these lock washers offer a unique combination of strength, hardness, wear resistance, and corrosion protection. Unlike many austenitic stainless steel grades, 400 Series stainless steel can be heat treated to enhance its mechanical properties, making it an excellent choice for applications requiring increased durability and holding power.

The material provides good resistance to corrosion while delivering the strength necessary for high-performance fastening applications. This makes 400 Series stainless steel lock washers suitable for a wide range of industrial and outdoor environments.

Benefits of 400 Series Stainless Steel

• Excellent mechanical strength

• Good corrosion resistance

• Heat-treatable for enhanced hardness

• Durable and wear-resistant

• Long service life

• Suitable for demanding fastening applications

Internal and External Tooth Design

These specialized lock washers feature teeth on both the inside and outside diameters. The internal teeth grip the fastener while the external teeth bite into the mating surface, creating maximum resistance to loosening.

Key Features

• Internal and external tooth locking action

• Increased grip and holding power

• Helps prevent vibration-induced loosening

• Maintains fastener preload and clamp load

• Manufactured from durable 400 Series stainless steel

• Suitable for high-vibration environments

• Available in a variety of standard sizes

Common Industrial Applications

Internal / External Tooth Lock Washer 400 Series Stainless Steel products are commonly used in industrial machinery, electrical equipment, automotive assemblies, HVAC systems, pumps, motors, control panels, agricultural equipment, manufacturing machinery, and maintenance applications. They are particularly effective where vibration and movement can compromise standard fastening methods.

Benefits of Internal / External Tooth Lock Washers

By providing multiple locking points, these washers improve fastener security and help maintain assembly integrity under challenging operating conditions. The combination of dual-tooth locking action and the strength of 400 Series stainless steel reduces maintenance requirements, improves equipment reliability, and extends service life. For applications requiring dependable vibration resistance and superior holding power, Internal / External Tooth Lock Washer 400 Series Stainless Steel products offer an effective and economical fastening solution.