The technical specification DIN 509 E 0.6 x 0.2 refers to a standardized undercut (also known as a relief groove) used in mechanical engineering and precision machining. Governed by the German Institute for Standardization, the DIN 509 standard ensures that rotationally symmetric parts have the necessary clearance for subsequent machining or assembly with mating components. Technical Breakdown of DIN 509 E 0.6 x 0.2
The alphanumeric designation "E 0.6 x 0.2" acts as a shorthand for specific geometric requirements:
Type E: This identifies the form of the undercut. Type E grooves are primarily used for cylindrical surfaces that require further machining (like grinding) but where the perpendicular planar surface (the shoulder) is not subjected to high fatigue loads. 0.6: This value represents the radius ( ) of the groove in millimetres. 0.2: This value represents the depth ( ) of the recess in millimetres. Applications and "Exclusive" Context
While the standard itself is universal in manufacturing, the term "exclusive" in this context often refers to high-precision engineering where specific DIN 509 tool configurations are required to maintain strict tolerances. These undercuts are essential in: din 509e06x02 exclusive
Fastener Manufacturing: Ensuring that bolts or screws sit flush against a surface without interference from a corner radius.
Shaft and Axle Design: Providing a "run-out" for grinding wheels to ensure the cylindrical surface is perfectly machined right up to the shoulder.
Standardization: Using these exact dimensions reduces the variety of tools needed in a workshop, as specified in the DIN 509:2006-12 technical documentation. Visualizing the Undercut The technical specification DIN 509 E 0
A Type E undercut is characterized by its single-sided relief. Unlike Type F, which provides relief for both the cylindrical and planar surfaces, Type E focuses on clearing the corner to allow a mating part with a counterbore to fit perfectly. Comparison with Other Forms Undercut TableDIN 509 | PDF | Machining - Scribd
However, without a direct reference or more context, it's challenging to provide a detailed write-up on this specific designation. Nonetheless, I can offer a general approach to understanding what such a designation might imply and how one might go about writing about it.
The portion "509" in your string strongly suggests a connection to DIN 509. Cyanide-free copper or pyrophosphate copper bath
Why would an engineer specify an "exclusive" variant instead of a standard DIN 509 Fe/Zn6c? The answer lies in four critical performance metrics:
We currently have a limited production run of DIN 509E06X02 Exclusive available. This is not a stocked item at most distributors.
What you get:
Pricing: Available on request (minimum order 500 kg / 1100 lbs)
Finding a plater certified for DIN 509E06X02 exclusive is challenging. As of 2025, fewer than 20 job shops in North America and 40 in Europe hold the specific bath chemistry and quality system for the "exclusive" designation.
