General Tolerance Iso 2768-mk Link Jun 2026

This report defines the general tolerance requirements for linear and angular dimensions (Part 1) as well as geometrical features (Part 2) according to . It serves as the default specification for drawings where no individual tolerances are indicated, ensuring uniformity in manufacturing and inspection.

Quality inspection teams have an unambiguous, globally recognized standard to verify parts against during final inspections. When to Override ISO 2768-mK

Thread tolerances (like 6H or 6g) must be specified separately. general tolerance iso 2768-mk

ISO 2768-1 defines four tolerance classes: f (fine), m (medium), c (coarse), and v (very coarse). The "m" designation means your design will follow medium tolerance limits.

saves you time and money. It tells your machinist: “I don’t need a micrometer for every single edge. Just machine it cleanly and consistently.” This report defines the general tolerance requirements for

Symmetry ensures that two features on a part are evenly spaced relative to a central datum plane or axis. Under class K, symmetry is tied to the longest feature: Nominal Length Range (mm) Symmetry Tolerance (mm) over 100 to 300 over 300 to 1000 over 1000 to 3000 Run-Out (Circular Run-out)

The tolerance value depends on the length of the line (for straightness) or the length of the longer side (for flatness). When to Override ISO 2768-mK Thread tolerances (like

Refers to ISO 2768-2 , which controls geometrical deviations such as straightness, flatness, and perpendicularity. Why "Medium" (mK) is the Industry Favorite

If you need a precision shaft to slide into a hole, you must use a standard like ISO 286 (e.g., H7/g6) instead of general tolerances.

ISO 2768 Part 1 divides tolerances into four classes: (fine), m (medium), c (coarse), and v (very coarse). The "m" class balances manufacturing cost with functional precision, making it the most common choice for general CNC machining and sheet metal fabrication.