ISO 2768 is an international standard for General Tolerances. It applies when individual tolerances are not explicitly specified on a drawing.
ISO 2768-mK combines two tolerance classes:
This combination is the most common default tolerance for machined parts, offering a balance between manufacturing cost and precision. Tolerance Iso 2768 Mk Pdf
⚠️ Note: ISO 2768 was withdrawn and replaced by ISO 22081:2021 in many regions, but it remains widely used in legacy drawings, workshops, and supply chains.
While this article provides a summary, engineers should always refer to the official standard for legal and contractual compliance. You cannot get the copyrighted PDF for free legally, but you can purchase or view it via: ISO 2768 is an international standard for General
If a drawing states ISO 2768-mK, the following limits apply automatically unless a specific tolerance is written next to the dimension.
Searching for a free "ISO 2768 MK PDF" is dangerous. Many "free" versions online are: This combination is the most common default tolerance
Where to get the legitimate PDF: