General Tolerance Iso 2768-mk Jun 2026

ISO 2768-2 covers Geometric Dimensioning and Tolerancing (GD&T) features. It simplifies drawings by eliminating the need to individualise symbols for straightness, flatness, and perpendicularity unless a critical fit demands it.

Represents the Medium accuracy class under ISO 2768 Part 1. It defines the allowable variations for lengths, radii, diameters, and angles.

Tolerances for linear and angular dimensions. general tolerance iso 2768-mk

: For class K, the general tolerance for symmetry is for all nominal lengths up to

The designation consists of two distinct parts that cover different aspects of part manufacturing: It defines the allowable variations for lengths, radii,

The designation is split into two distinct parts, covering different aspects of manufacturing accuracy:

Refers to ISO 2768-2 . This uppercase letter defines the permissible deviations for geometrical features (form and position), such as flatness, straightness, and perpendicularity. This uppercase letter defines the permissible deviations for

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.

. It simplifies drawings by removing the need to label every single measurement, ensuring that the "default" precision of a part is understood by the machinist. The code is divided into two parts: : Refers to

For angles, the 'm' class allows for standard angular deviations based on the length of the shorter leg of the angle: Length of Shorter Leg (mm) Permissible Deviation ('m' - Medium) Over 10 to 50 ± 30' (0.5°) Over 50 to 120 ± 20' (0.33°) Over 120 to 400 ± 10' (0.16°) Breakdown of ISO 2768-2: Geometric Tolerances ('K')

Angular tolerances are not constant; they depend on the length of the shorter side of the angle.