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Application Guide

Where DIN 6798A External-Tooth Lock Washers Work Best

DIN 6798A External-Tooth Lock Washers are a good fit when the spring geometry matches the movement, contact points and available space in the assembly. The best choice comes from the job the spring must perform rather than from a catalog name alone. Working positions, load and the surrounding parts should be reviewed together.

DIN 6798A External-Tooth Lock Washers

Where it earns its place

Best-Fit Uses

Custom return or preload

Provides spring force in an assembly designed around this spring style.

Drawing-specific fit

Matches a product envelope that needs a purpose-built spring solution.

Taking up small axial variation

Adds a short amount of elastic movement where rigid washers or spacers would leave looseness.

Supporting preload at a fastener or bearing

Keeps parts in contact as a joint settles or a stack changes slightly in service.

Why this style works here

What This Spring Style Solves

The best choice comes from the job the spring must perform rather than from a catalog name alone. Working positions, load and the surrounding parts should be reviewed together.

Best fit: The spring geometry matches the movement, contact points and available space in the assembly.

Before you choose it

What to Confirm in Your Assembly

  • Provide the assembly drawing and all working positions.
  • State the required force or torque and expected cycle life.
  • Provide fastener, shaft or bore size together with the surfaces that support the washer.
  • State free height, installed height and target installed load.
  • Define the minimum and maximum stack conditions the washer must accommodate.

Avoid forcing the wrong spring into the design

When Another Spring Style May Fit Better

Use the simplest spring style that meets the load, travel and packaging need. A more specialized geometry should solve a clear application problem.

  • Browse the spring catalog for other geometries
  • Review the application with your assembly drawing

Compare spring types in Products

Keep material selection separate

Environment & Material Direction

Material should be chosen for corrosion, heat and long-term preload after the washer profile and working range are set. Those alloy details belong in the Materials section.

Compare spring material families

Move from the use case to the specification

Where to Go Next

Application questions

Frequently Asked Questions

How do I confirm this spring style is the right fit?

Compare the required movement, load, available space, attachment points and working environment. A drawing review is the best way to confirm whether another spring style would package the job more simply.

Are different spring-washer shapes interchangeable?

No. Wave, curved, conical, serrated and split forms can serve different purposes and produce different force or contact behavior. Matching ID and OD does not make them direct substitutes.

What should I send for an application review?

Send the assembly drawing or a clear sketch, the working positions, the force or torque you need, expected cycles, environment and quantity. If an existing spring is being replaced, include its dimensions and explain what is not working well in the current design.

Same application family

Related Application Guides

Application review

Send the working positions, load and drawing

Send the working positions, required force or torque, available space, environment, quantity and a drawing or sketch. That gives us enough context to review the spring style before final dimensions are confirmed.

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Send your dimensions, quantity and drawing for engineering review.

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