Din Iso 2768 Mk Tolerances
Tolerances Per Iso 2768 Mk

What is ISO 2768?
ISO 2768 and derivative geometrical tolerance standards ISO 2768–mk and ISO 2768–fh are intended to simplify drawing specifications for mechanical tolerances. ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials. Variations on dimensions without tolerance values are according to ISO 2768, all tolerance limits are given in mm.

International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

General tolerance ISO 2768 does not specify where to use these tolerances. Tolerance class is defined as per design requirements and manufacturing capability. For example : for sheet metal parts ISO 2768–mk is used. And for machined components ISO 2768–fh can be used.

General Tolerances to DIN ISO 2768. The latest DIN standard sheet version applies to all parts made to DIN standards. Variations on dimensions without tolerance values are according to 'DIN ISO 2768- mk'. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1) LINEAR DIMENSIONS. General Tolerances to DIN ISO 2768 T1 and T2 The latest DIN standard sheet version applies to all parts made to DIN standards. Variations on dimensions without tolerance values are according to 'DIN ISO 2768-mk'. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1) LINEAR DIMENSIONS: DIN ISO 2768 T1. DIN ISO 2768 1 / 3 Maryland Metrics Technical Data Chart: General Tolerances to DIN ISO 2768 T1 and T2 The latest DIN standard sheet version applies to all parts made to DIN standards. Variations on dimensions without tolerance values are according to 'DIN ISO 2768-mk'. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1). This part of ISO 2768 is intended to simplify drawing indications and specifies general geometrical tolerances to control those features on the drawing which have no respective individual indication. General Product Information - (Show below) - (Hide below).

ISO 2768-2 : 1989, General tolerances — Part 2:

Geometrical tolerances for features without individual tolerance indications.

ISO 8015 : 1985

Technical drawings — Fundamental tolerancing principle.

Variations on dimensions without tolerance values are according to ” ISO 2768″. All tolerance limits are given in mm.

ISO 2768 and derivative geometrical tolerance standards are intended to simplify drawing specifications for mechanical tolerances. ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials.

Linear Dimensions

Permissible deviations in mm for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (medium)	c (coarse)	v (very coarse)
0.5 up to 3	±0.05	±0.1	±0.2	–
over 3 up to 6	±0.05	±0.1	±0.3	±0.5
over 6 up to 30	±0.1	±0.2	±0.5	±1.0
over 30 up to 120	±0.15	±0.3	±0.8	±1.5
over 120 up to 400	±0.2	±0.5	±1.2	±2.5
over 400 up to 1000	±0.3	±0.8	±2.0	±4.0
over 1000 up to 2000	±0.5	±1.2	±3.0	±6.0
over 2000 up to 4000	–	±2.0	±4.0	±8.0

External Radius and Chamfer Heights

Permissible deviations in mm for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (middle)	c (coarse)	v (very coarse)
0.5 up to 3	±0.2	±0.2	±0.4	±0.4
over 3 up to 6	±0.5	±0.5	±1.0	±1.0
over 6	±1.0	±1.0	±2.0	±2.0

Angular Dimensions

Permissible deviations in degrees and minutes for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (middle)	c (coarse)	v (very coarse)
up to 10	±1º	±1º	±1º30′	±3º
over 10 up to 50	±0º30′	±0º30′	±1º	±2º
over 50 up to 120	±0º20′	±0º20′	±0º30′	±1º
over 120 up to 400	±0º10′	±0º10′

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