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Maryland Metrics Technical Data Chart:
General Tolerances to DIN ISO 2768 T1 and T2

GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1)
LINEAR DIMENSIONS:

Permissible deviations
in mm for ranges in
nominal lengths


f (fine)

Tolerance class
designation (description)



v (very coarse)
m (medium) c (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 RADII AND CHAMFER HEIGHTS

Permissible deviations
in mm for ranges in
nominal lengths


f (fine)

Tolerance class
designation (description)



v (very coarse)
m (middle) c (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)
m (middle) c (coarse)
up to 10 1º30'
over 10 up to 50 0º30' 0º30'
over 50 up to 120 0º20' 0º20' 0º30'
over 120 up to 400 0º10' 0º10' 0º15' 0º30'
over 400 0º5' 0º5' 0º10' 0º20'

 

GENERAL TOLERANCES FOR FORM AND POSITION (DIN ISO 2768 T2)
STRAIGHTNESS AND FLATNESS

Ranges in nominal
lengths in mm

Tolerance class

H

K

L

up to 10 0.02 0.05 0.1
over 10 up to 30 0.05 0.1 0.2
over 30 up to 100 0.1 0.2 0.4
over 100 up to 300 0.2 0.4 0.8
over 300 up to 1000 0.3 0.6 1.2
over 1000 up to 3000 0.4 0.8 1.6

 

PERPENDICULARITY

Ranges in nominal
lengths in mm

Tolerance class

H

K

L

up to 100 0.2 0.4 0.6
over 100 up to 300 0.3 0.6 1
over 300 up to 1000 0.4 0.8 1.5
over 1000 up to 3000 0.5 0.8 2

 

SYMMETRY

Ranges in nominal
lengths in mm

Tolerance class

H

K

L

up to 100 0.5 0.6 0.6
over 100 up to 300 0.5 0.6 1
over 300 up to 1000 0.5 0.8 1.5
over 1000 up to 3000 0.5 1 2

 

RUN-OUT

Tolerance class

H K L
0.1 0.2 0.5

all dimensions in mm

THINK!- MARYLAND METRICS - The One-Stop Source For Metric And British Sized Fasteners, Wrenches, Cutting, & Measuring Tools, Metal Shapes, Oil Seals, O-Rings, Mechanical Power Transmission Equipment, Bearings, Hydraulic And Pneumatic Fittings & Tubing, Workholding Components, Plumbing Fittings, & Some Electrical & Electronic Components. Click to go to Maryland Metrics home page


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