The practical difference in buyer intent
DIN 2093 disc spring requests often come from engineers or buyers who care about load at deflection, series or parallel stacking, fatigue, material choice and replacement geometry.
DIN 6796 washer requests more often come from bolted-joint sourcing, where the buyer wants a heavy-duty washer that supports preload better than an ordinary spring washer.
When DIN 2093 is the better starting point
Use DIN 2093 as the starting point when the washer is acting as a spring element with a defined force-travel curve. This is common in actuators, clutches, overload devices, valve assemblies, machinery and custom spring stacks.
The RFQ should include outside diameter, inside diameter, thickness, free height, target load, working deflection, stack arrangement and material.
- Defined load at 25%, 50% or 75% deflection.
- Series and parallel stack behavior.
- Material upgrade from spring steel to stainless or nickel alloy.
- Fatigue, relaxation and inspection requirements.
When DIN 6796 may be the better starting point
DIN 6796 is usually reviewed around bolt size, washer size, strength class, surface finish and fastening environment. It is a purchasing-friendly path when the application is primarily a bolted joint rather than a tuned spring stack.
For severe heat, corrosion, vibration or leakage-sensitive joints, the buyer should still share service conditions so material and preload margin can be reviewed.
How to avoid quoting the wrong standard
The simplest way to avoid confusion is to describe the job of the washer. If the part must deliver a target force through measurable travel, begin with DIN 2093. If the part mainly supports a fastener and bolt size drives selection, begin with DIN 6796.
If the project is a flange, valve or high-risk joint, send the application data anyway. The correct choice may depend on load window, installation height and material risk rather than the standard name alone.
Buyer decision table for RFQ routing
Use DIN 2093 when the RFQ mentions load at deflection, spring travel, stack height, fatigue or custom force behavior. Use DIN 6796 when the RFQ is mainly driven by bolt size, high-strength fastening, heavy-duty spring washer replacement or bolted joint preload support.
For procurement teams, this difference matters because DIN 2093 quotes usually need geometry and load data, while DIN 6796 quotes usually begin with bolt size, washer size, material, finish and quantity.
- DIN 2093: force-deflection control, actuator stacks, overload devices, valve springs and custom preload systems.
- DIN 6796: heavy-duty bolting washers, electrical connections, vibration-prone fastening and settlement compensation.
- Unclear RFQ: send the application function, target load, working movement, material and service environment for review.
Questions frequentes
Are DIN 2093 and DIN 6796 interchangeable?
Not automatically. They may look related, but the selection logic is different. DIN 2093 is usually reviewed as a disc spring, while DIN 6796 is usually reviewed as a bolting washer.
Which standard should I mention in an RFQ?
Mention the known standard if you have it, but also describe the function, target load, working deflection, bolt size, installation space, material and service conditions.
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- Remplacement DIN 2093 ou géométrie sur mesure
- Empilages pour vannes, brides, actionneurs et service sévère
- Revue matière inox, Inconel, Hastelloy, titane ou acier résistant à la chaleur
Géométrie finale, fatigue, source K4, frottement et conditions d’appui restent à confirmer par ingénierie.